Personal account and Helix account are not recognized but internet works

Can't log in to either account, they are not identified by Videotron as existing. This began at least a month ago. Otherwise, the service is working fine: internet is ok and all services are 

working.

Would like to check my account status to see if there could be situations that need investigating: adding features, checking prices or adjusting features: the normal business 

relationship of consumer with supplier.