Issue with SMTP: Error 535

Issue with SMTP: Error 535

Sorry if this is a duplicate, I hit preview and my post vanished. I'm having trouble getting SMTP tp authenticate. I'm using an API to send a user an email when they sign up to my website. I'm using nodemailer in the API, and I'm testing the connection via www.gmass.co/smtp-test#. I Know most of what to fill in, but a couple areas confuse me, or are unclear.

SMTP Server/Host: smtp.zoho.com
Port: 465
Security: SSL
From: contact@<mywebsite>.com
Password: Confused here. Is this Zoho's password, the one for my individual email, or is there a third option?
Username (gmass only): Is this my name on Zoho (Braxton Istace), my username (Someone), the beginning of the email (contact), or the username I chose for the email (Name of website, I think)?
siteUrl (nodemailer only): Is this http://www.<mywebsite>.com/ or is it Zoho, or where my API is (currently localhost)?