Unable to Access Emails in Zoho CRM - Saying IMAP not Configured but they are!

Unable to Access Emails in Zoho CRM - Saying IMAP not Configured but they are!

Hi

In the recent few days we have noticed that we can not access emails in Zoho CRM that are synced through our Zoho Mail accounts. I have noticed that in Channels > Emails a message is now there that says:

You are yet to enable IMAP for your account. Access the link https://www.zoho.com/mail/help/imap-access.html to learn more. (Failure)

However I have checked all the settings in Zoho Mail and they are set up for IMAP - this has only recently started?

Any help will be greatly appreciated!

Thanks
Rohit