Troubleshooting: Coupler.io refused to connect

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

The error:

When you are using Coupler.io Add-on and click on the "Add" importer button or "Edit" importer button - our Wizard is opened, but shows you the message " www.coupler.io refused to connect". This issue can occur using a common browser window or in Incognito mode.

Google Chrome:

Mozilla Firefox

Microsoft Edge:

Safari:

To resolve the issue:

For proper functioning of the Coupler.io Add-on, your browser should allow usage of 3d party cookies. To change settings follow the next steps according to the browser you use:

Google Chrome:

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 3d party cookies, so additional settings are needed for Coupler.io in "Customized behaviors" section:
   
   --  Scroll to the "Sites that can always use cookies" list. --  Click "Add".
   --  Paste " https://www.coupler.io".
   --  Check "Including third-party cookies on this site".
   --  Click "Add". --  Click "Add".
   --  Paste "https://docs.google.com".
   --  Check "Including third-party cookies on this site".
   --  Click "Add". As result you should have next settings:Allowance for https://www.coupler.io is needed to allow web version work.
   Allowance of https://docs.google.com is needed to allow addon work in Google Spreadsheets.
3. Restart browser & Reopen addon.

Mozilla Firefox:

1. Navigate to Settings -> Privacy and Security -> Enhanced Tracking Protection.
2. Select one of the options:
   
   -  The " Standard" option. 
   -  The "  Custom" option with "Cross-site tracking cookies".
   -   The " Custom" option with "Cross-site tracking cookies, and isolate other cross-site tracking cookies"
3. Restart browser & Reopen addon.

Microsoft Edge:

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. -  Leave "Block third-party cookies" enabled, but all Coupler.io to the list of allowed websites:
   
   --  In the "Allow" block click "Add" --  Paste " https://www.coupler.io".
   --  Check "Including third-party cookies on this site".
   --  Click "Add". --  Click "Add".
   --  Paste  "https://docs.google.com".
   --  Check "Including third-party cookies on this site".
   --  Click "Add". You should get the next settings:
   Allowance for https://www.coupler.io is needed to allow web version work.
   Allowance of https://docs.google.com is needed to allow addon work in Google Spreadsheets.
3. Restart browser & Reopen addon.

Safari:

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

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:

1. Go to Safari -> Preferences -> Privacy.
2. Uncheck the "Block all cookies" option.
3. Restart browser & Reopen addon.