OAuth2 Refresh not working / troubleshooting

Hi

I hve set-up a OAuth2 api credentials via my n8n cloud instance. Somehow the token does not refresh automatically while I have set access_type to offline. I have two other credentials also with zoho that work perfectly.

Can someone clarify where I can look to resolve this? I have a n8n pro cloud instance.

Greetings,

Justin

Hi @Justin4 , can you confirm that access_type=offline is set in the Authorization URL and not just in additional parameters also check if you’re receiving a refresh_token in the initial authorization response and the Authorization URL should look something like: https://accounts.zoho.com/oauth/v2/auth?access_type=offline

Hi @JohnHalex

Yes I confirm. Please see the screenshot of the credentials.

For confirming, I only can use postman to check if the refresh_token is there. And it is.

Bump: The problem still exists. How can I check why the refresh is failed.