Hello @KevinTheJedi
when added the config mailbox plugin instance and saved it in the plugin _instance table so when I deleted the plugin instance created from manage->plugin->pluign_instance and go to email again for re-config I get this error
![](https://forum.osticket.com/assets/files/2023-05-25/1685025375-856385-image.png)
![](https://forum.osticket.com/assets/files/2023-05-25/1685025383-144761-image.png)
but when I made the auth_bk = 'oauth2' and auth_id = NULL manually in the email_account table and re-config it works well so how did i solve this error