Everything has been working working fine, but today Outlook (365 desktop) stopped syncing with zoho. 

I tried removing the account from outlook but now when I try to re-add it, I get this error:

"We couldn't connect to the (IMAP) server using the specified encryption method. Please check the incoming (IMAP) server encryption method and try again".

I don't have TFA and I am using an App specific password. 

Settings screenshot attached.

What's gone wrong?