I am trying to switch the mail client on my Mac to Spark.  When I try to set up the IMAP connection to Zoho, I get an error saying "this server is not compatible with Spark".  I have confirmed all of my IMAP settings (I use them with other clients).  I have turned on TFA and have generated an app specific password for Spark.  

It looks like other people have been able to sync Spark and Zoho mail.  Any help would be greatly appreciated.