POP and SMTP failing from MAC Mail

POP and SMTP failing from MAC Mail

I believe that since I added in that additional level of security (the one that ties SMS to my phone) that I have not been able to connect to the Zoho mail servers via POP, SMTP or even IMAP. I did get the SMS message to my phone and did all the confirmations. I've switched back and forth between POP and IMAP and neither seem to want to connect. I've deleted and added back the ZOHO account to my MAC Mail and that didn't fix anything. I can log in to the ZOHO webmail with the proper user name and password, but those same credentials do not work in MAC Mail. My email box is bill@collectors-net.com. Can someone please look into this and explain what the issue is? Thanks!