Zoho Mail unable to verify account or password (works on other computer)

Zoho Mail unable to verify account or password (works on other computer)

Hello!

Apple Mail on Macbook Air says "Unable to verify account or password" despite having exactly the same settings as my iMac. Spoke to Apple Support that refers to Zoho. Both have latest update of High Sierra.

Using imappro.zoho.com (993) for incoming and smtp.zoho.com (465 or 587, tried both) for outgoing. SSL for both.

Any solution?