Cogeco Mail on iPhone 11, iPad 8, and iPad Air not working

I have had the iPhone and iPads for several years and Cogeco mail worked fine until last night kept getting message user name or password is incorrect. Then got message Cogeco not available at this time. I got support from Cogeco and changed the email account password but did not help. The webmail works fine. and the Cogeco account added to apple mail on my iMac works fine but not on my iPhone or iPads. I have deleted the accounts and reset up the accounts with no success.