Common Issues
Connection issues
I can't find my file in the file picker
This usually means you're connected to the wrong Dropbox account. Coupler.io shows files from the Dropbox account you authorized during setup.
Fix: Sign out of all Dropbox accounts in your browser, then sign back in to the account that contains your file. Return to Coupler.io, refresh the file picker, and try again. If you need to switch accounts, you may need to disconnect and reconnect Dropbox in your Coupler.io account settings.
"File is no longer available to the current connection"
This error appears when the Dropbox connection has expired or the file has been moved/deleted since you set up the data flow.
Fix:
Check that the file still exists in Dropbox at the same location
If the file was moved, update the file selection in your data flow
If the connection has expired, disconnect Dropbox and reconnect by clicking "Connect to Dropbox" again in your data flow settings
I'm seeing a login screen when I try to connect
Dropbox is asking you to authenticate. Make sure you're signing in with the account that has access to the files you want to import.
Fix: Sign in with your Dropbox credentials and grant Coupler.io permission to access your files. If you're having trouble, try clearing your browser cache or using an incognito window.
Missing data
Only part of my spreadsheet is being imported
You may have set a custom range (like A1:Z100) that's limiting the import, or the sheet contains blank rows that are being skipped.
Fix:
Check your data flow settings and look at the "Range" field
If a range is set and you want all data, clear it
Ensure your spreadsheet has headers in the first row — data without headers may not import correctly
Run a manual test to see exactly what's being pulled
Columns are missing from my import
This can happen if columns are formatted strangely, hidden, or contain only blank values.
Fix:
Open the original file in Dropbox and verify the columns exist and contain data
Check that no columns are hidden in the spreadsheet
If using a custom range, make sure all columns you need are included in the range (e.g., A1:Z100 covers columns A through Z)
Run a manual test to see which columns are being detected
Data from multiple sheets isn't being appended
You may have selected only one sheet, or the sheets have different column structures.
Fix:
Return to your data flow and select all sheets you want to import
Ensure all sheets have the same column headers in the same order — if column names differ, Coupler.io treats them as separate columns
If sheets have different structures, consider running separate data flows or aligning the sheet headers first
Permission errors
"Permission denied" or "Access forbidden"
The Dropbox account you're connected with doesn't have permission to access the file.
Fix:
Verify you're signed in to the correct Dropbox account (the one with access to the file)
If the file is shared with you, make sure the sharing permission level allows reading/access
Disconnect Dropbox and reconnect with the account that has the proper permissions
Data discrepancies
Formula values aren't appearing in my destination
Coupler.io imports the calculated value of a formula, not the formula itself. However, sometimes calculated values may not display correctly if the spreadsheet isn't saved in the right format.
Fix:
Save your Excel file in .xlsx format (not .xls or other formats)
Open the file in Excel or Excel Online and ensure formulas are recalculated and saved
Run a manual test in Coupler.io to see if the values now appear
If using a Google Sheet exported to Dropbox, ensure it was exported with current values calculated
Numbers are being imported as text
This happens when your spreadsheet cells are formatted as text instead of numbers, or if your CSV uses a comma as a decimal separator.
Fix:
In the original spreadsheet, select the numeric columns and change their format to "Number"
Re-save the file and run another import
If using a CSV, check that your locale settings match (e.g., comma vs. period for decimals)
In your destination, you can also format columns after import
Dates are showing incorrectly in my destination
Date formats can vary by locale and spreadsheet application. Coupler.io imports the date value but your destination may interpret it differently.
Fix:
In your Dropbox spreadsheet, ensure dates are formatted as actual date cells (not text)
After import, manually format the date columns in your destination to match your preferred format
If dates are still wrong, check your Coupler.io account timezone settings
Rate limits
My data flow is running slowly or timing out
Large files or frequent refreshes can cause slowdowns. Dropbox rate limits may also apply if you're running many data flows simultaneously.
Fix:
If importing a very large file (100,000+ rows), consider splitting it into smaller ranges or files
Avoid running multiple data flows on the same Dropbox account at the same time
Space out scheduled refreshes — instead of running every 15 minutes, try hourly or daily
Use a data warehouse like BigQuery as your destination for better performance with large datasets
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