Hi GraemeLM / KathyDavis ,
The symptoms presented here look like user error to me.
The most frequent thing I see is confusion between users of their:
MYOB Advanced site password; (Green button)
MYOB IDS account : (I often call it a MyDot account, it's the same account they have for the Community forum, or any other MYOB products they might have used)
If they are trying to log into MYOB Advanced, they need to use their Advanced specific username & password
If they are trying to log in via the Purple button, they need to:
1. Make sure they have an IDS account. (Many people don't)
2. Make sure they use the separate IDS password.
Note: It's not always the same email address, they can be unlinked.
(My advanced account can be sales@rapidbyte.com and my Identity account could be will.howard@rapidbyte.com , for example.)
My troubleshooting steps are probably:
A) Confirm they can log in to Advanced using their Advanced Site Username/password via Green button
B) Confirm they can log in directly to our Identity services (community.myob.com uses the same auth, so you can send them here and ask them to try logging in/creating an account)
https://help.myob.com/wiki/x/eQOJB
I'm not saying our identity services are infallible, just the above looks a lot like what happens with user error.
I won't be able to offer any ongoing support here, and if you/your customers are having issues, please raise cases in Phoenix.