Trouble with downloaded accounts

New senior citizen user (not exactly a computer whiz).
Downloaded eM Client
Asked it to download account info, address book etc. from Thunderbird account
Have 4 email accounts - one gmail and 3 Rogers.
Looked like they all came over but only gmail account actively downloading e-mails.
3 Rogers accounts (including my most active one) show errors.
Somehow Yahoo and Google have appeared during transfer which may be the problem.
Looks like a great problem and should be much faster than Thunderbird but no good to me if it only reads one of my four accounts.

Are you running the FREE version of eMC or the PRO version?
Free version only allows 2 accounts, PRO allows unlimited.

What is the exact error message(s) you are encountering?