# Coupler.io refused to connect

This is a known issue related to the cookie settings of your browser or to the installed browser addons that are able to manage cookies. 

***

#### Issue Overview

When you are using the Coupler.io add-on and click on the "Add" data flow button or "Edit" data flow button, our wizard opens, but it shows you the message:

```
www.coupler.io refused to connect
```

This issue can occur when using a common browser window or an incognito window.

***

#### To resolve the issue: <a href="#resolve-cookies-issue" id="resolve-cookies-issue"></a>

For proper functioning of the Coupler.io Add-on, your browser should allow the use of third-party cookies. To change the settings, follow the next steps according to the browser you use:

{% tabs %}
{% tab title="Google Chrome" %}
**The error:**

<div align="left"><img src="https://d33v4339jhl8k0.cloudfront.net/docs/assets/57fbf3029033600277a688ab/images/60ec673761c60c534bd6e98f/file-DV5P8IMAFO.png" alt="" width="375"></div>

**Resolution:**

1. Navigate to Settings >> Privacy and Security >> Cookies and other site data.
2. Select one of the next options:
   * **Allow all cookies** - with this option, Coupler.io will work in the common window of your browser and in Incognito mode also.
   * **Block third-party cookies in Incognito -** with this option, Coupler.io will work in the common window of your browser, but will not work in Incognito mode.
   * **Block third-party cookies** - with this option, you will block all third-party cookies, so additional settings are needed for Coupler.io in the *"Customized behaviors" section:*
     * Scroll to the "Sites that can always use cookies" list.<br>

       <div align="left"><figure><img src="https://2487187314-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FCgnmco7kCnvytNIN8YdT%2Fuploads%2FbHtrehJXIFeHJWWJOTse%2Fimage.png?alt=media&#x26;token=3e4173ff-ae70-4edd-b91d-cdc590abf2e4" alt="" width="375"><figcaption></figcaption></figure></div>
     * Click "Add".
     * Paste " [*https://www.coupler.io"*](https://www.coupler.io/)*.*
     * Check "Including third-party cookies on this site".
     * Click "Add".

       <div align="left"><figure><img src="https://d33v4339jhl8k0.cloudfront.net/docs/assets/57fbf3029033600277a688ab/images/6215274d42146d45b7437553/file-QUXldlV133.png" alt="" width="375"><figcaption></figcaption></figure></div>
     * Paste *"*[*https://docs.google.com*](https://docs.google.com/)*".*
     * Check "Including third-party cookies on this site".
     * Click "Add".

       <div align="left"><figure><img src="https://d33v4339jhl8k0.cloudfront.net/docs/assets/57fbf3029033600277a688ab/images/621527b94c347227dece1dba/file-MUcQ6zNzrE.png" alt="" width="375"><figcaption></figcaption></figure></div>
   * As result you should have next settings:

     <div align="left"><figure><img src="https://d33v4339jhl8k0.cloudfront.net/docs/assets/57fbf3029033600277a688ab/images/621527dc5349082256fc2778/file-ZS20EwTMoZ.png" alt="" width="563"><figcaption></figcaption></figure></div>

     *Allowance for* [*https://www.coupler.io*](https://www.coupler.io/) *is needed to allow the web version to work.*\
     *Allowance of* [*https://docs.google.com*](https://docs.google.com/) *is needed to allow the addon to work in Google Spreadsheets.*
3. Restart the browser & reopen the addon.
   {% endtab %}

{% tab title="Mozilla Firefox" %}
**The error:**

<div align="left"><img src="https://d33v4339jhl8k0.cloudfront.net/docs/assets/57fbf3029033600277a688ab/images/60ec69c900fd0d7c253fefd1/file-5QqOnmIKqK.png" alt="" width="375"></div>

**Resolution:**

1. Navigate to Settings -> Privacy and Security -> Enhanced Tracking Protection.
2. Select one of the options:

   * The "**Standard**" option.&#x20;
   * The "**Custom**" option with **"Cross-site tracking cookies".**
   * The **"Custom"** option with **"Cross-site tracking cookies, and isolate other cross-site tracking cookies"**

   <div align="left"><figure><img src="https://2487187314-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FCgnmco7kCnvytNIN8YdT%2Fuploads%2FJ7XItHAytMp14W7Aezj3%2Fimage.png?alt=media&#x26;token=f76d4f0a-1138-4a64-a2be-e939303053df" alt="" width="375"><figcaption></figcaption></figure></div>
3. Restart the browser & reopen the addon.
   {% endtab %}

{% tab title="Microsoft Edge" %}
**The error:**

<div align="left"><img src="https://d33v4339jhl8k0.cloudfront.net/docs/assets/57fbf3029033600277a688ab/images/60ec6a2605ff892e6bc3019e/file-2CebPGjilj.png" alt="" width="375"></div>

**Resolution:**

1. Navigate to Settings -> Cookies and site permissions -> Cookies and site data
2. Select one of the next options:
   * Disable the " **Block third-party cookies**" option.&#x20;

     ![](https://d33v4339jhl8k0.cloudfront.net/docs/assets/57fbf3029033600277a688ab/images/62152bbd4c347227dece1de5/file-VN3ACc581l.png)
   * Leave "**Block third-party cookies**" enabled, but add Coupler.io to the list of allowed websites
   * In the "Allow" block click "Add"<br>

     <div align="left"><figure><img src="https://2487187314-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FCgnmco7kCnvytNIN8YdT%2Fuploads%2FIKZ5Tv4cnb99vHhIzxvz%2Fimage.png?alt=media&#x26;token=67775b12-ae36-4770-86ff-ada1cc75a705" alt="" width="375"><figcaption></figcaption></figure></div>
   * Paste " [*https://www.coupler.io"*](https://www.coupler.io/)*.*
   * Check "Including third-party cookies on this site".
   * Click "Add".

     <div align="left"><img src="https://d33v4339jhl8k0.cloudfront.net/docs/assets/57fbf3029033600277a688ab/images/62152c1b42146d45b7437581/file-aOeoJ4GFvI.png" alt="" width="375"></div>
   * Click "Add".
   * Paste  *"*[*https://docs.google.com*](https://docs.google.com/)*".*
   * Check "Including third-party cookies on this site".
   * Click "Add".

     <div align="left"><img src="https://d33v4339jhl8k0.cloudfront.net/docs/assets/57fbf3029033600277a688ab/images/62152c404c347227dece1de7/file-196MAXWRpT.png" alt="" width="375"></div>
   * You should get the next settings:

     <div align="left"><img src="https://d33v4339jhl8k0.cloudfront.net/docs/assets/57fbf3029033600277a688ab/images/62152c643271e31797cf1032/file-jwZg3rZ8j5.png" alt="" width="563"></div>

     *Allowance for* [*https://www.coupler.io*](https://www.coupler.io/) *is needed to allow the web version to work.* \
     *Allowance of* [*https://docs.google.com*](https://docs.google.com/) *is needed to allow the addon to work in Google Spreadsheets.*
3. Restart the browser & reopen the addon.
   {% endtab %}

{% tab title="Safari" %}
**The error:**

![](https://d33v4339jhl8k0.cloudfront.net/docs/assets/57fbf3029033600277a688ab/images/6215458b42146d45b743766d/file-XPSYMcprhK.png)

**Resolution:**

1. Click "Allow" in the pop-up that is visible.

<div align="left"><figure><img src="https://2487187314-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FCgnmco7kCnvytNIN8YdT%2Fuploads%2FLvAQHIb9u87k5Hq5hNbW%2Fimage.png?alt=media&#x26;token=251c5ab2-2603-4b5d-94be-9ada6163b106" alt="" width="375"><figcaption></figcaption></figure></div>

*If it is not enough, check your general settings.* *Safari does not have separate settings for 3d party cookies, only a single setting to block all or allow all:*

2. Go to Safari >> Preferences >> Privacy.
3. Uncheck the "Block all cookies" option.

   <div align="left"><img src="https://d33v4339jhl8k0.cloudfront.net/docs/assets/57fbf3029033600277a688ab/images/621542953271e31797cf10f9/file-FiS3Pxi4Tj.png" alt="" width="563"></div>
4. Restart the browser & reopen the addon.
   {% endtab %}
   {% endtabs %}