Hey there kn,
I'm sorry about the delayed response, thank you for being patient! Were you able to fix that audio issue? If not, I'd be happy to help out, let me just ask you some questions about what's happening:
I look forward to your response, and if you have any other questions or concerns for me, please let me know!
Thank you for responding back, firmware is QTS1.210311.008.7350836.
No problem at all!
If the issue is only happening with HBO Max in particular, it may be worth checking out their help center to see if they have any solutions. Aside from that, it may be worth disconnecting and re-connecting those headphones to see if that resolves the issue.