Hi @sbazzi,
thank you for the reply.
We enabled debug mode on our wordpress and initiated the authentication flow again. As before, no problem during authentication and even get the success notification.
The Debug log show one line in this regard:
[21-Jul-2020 07:49:18 UTC] PHP Notice: unserialize(): Error at offset 0 of 300 bytes in /home/wp/disk/wordpress/wp-content/plugins/gravityformszohocrm/class-gf-zohocrm.php on line 361
We will update and see if the problem persists.
Cheers
Gerardo