Cannot verify my sellsy connection

Hello all,

I am trying to create a scenario, but I am stopped at the very start of the process because my connection seems to be unable to verify my CRM.
I work with a CRM Called Sellsy. I have created my new API access as requested with a client ID and secret, and added the URL redirect : https://www.integromat.com/oauth/cb/oauth2 provided by Make but it still brings an error message :

*I have verified the connection multiple times in the connection menu.
Any help would be greatly appreciated :slight_smile: