KevinTheJedi
I have fixed my issue by deleting the plugin, by disabling it was still having an issue
Now, I have an Auth2 issue which I had tested on my test server, and on the live server I get this error:
array ( 'code' => 'MailboxNotEnabledForRESTAPI', 'message' => 'The mailbox is either inactive, soft-deleted, or is hosted on-premise.', )