While watching the Max app, it shut down and now saying “can’t verify subscription”

@RollTide1016  My cut and paste response:

AT&T spun off HBO Max (now called Max) over a year ago. It is now owned by WBD (Warner Brothers/Discovery) making its own decisions as to who has access or not. The migration of legacy AT&T accounts to Max did not go well and has been fraught with many problems. Some customers were able to get their AT&T logins merged to Max but their service was downgraded to Ad-free, two concurrent devices, full HD only. If you want 4k HDR/Atmos (Ultimate Tier) you need to subscribe directly to Max and pay for it. Your original TOS stated that "terms were subject to change", and being as AT&T no longer controls Max, that certainly qualifies as a change. Also, any changes you made to your plan after activating your "HBO Max for Life" promo also affected that promo. Max (WBD) is in control now so it's up to them as to who gets free access to their full HD tier or not. You can try to contact AT&T Support and see if they can sync your account info to Max but it's hit and miss.

@RollTide1016  I don't think that's true. Max is its own company now and makes their own decisions on who gets free access or not. See my post above. The "fix" will probably only be temporary. Renewing going forward will be thru  Max, not AT&T, and at that time Max will more than likely tell you that you need to subscribe directly thru them. I hope AT&T can work out some sort of deal for the legacy AT&T subscribers to maintain their "free HBO Max for life" promo but it's doubtful as there is nothing now in it for AT&T. Congrats on getting your subscription back.