Your account is with Roku, not MAX, and linked to your Roku account. Shouldn't have to log in at all, since the Roku knows who you are.
Are you accessing MAX through The Roku Channel?
Roku Community Streaming Expert
I am not a Roku employee, only a user like you. Please, no support questions via private message -- post them publicly to the Community where others may benefit as well.
If this post solves your problem please help others find this answer by clicking "Accept as Solution.".
Ultra 4800 | Streaming Stick 4K+ 3821 | TCL Roku TV 43S245/C107X