Hi @Pre1234!
Thanks for posting in the community.
I’m sorry to hear that you’ve been having issues with your Nest Hub Max. I can see that it is automatically increasing the volume to maximum. You tried factory resetting the device, but the trouble persists. In order to receive further assistance, please fill out this form with all the necessary information, like the thread title or link and your username in the community. Once you've completed the form, let me know. Someone from my team will contact you shortly to help.
Keep me posted.
Best regards,
Daniel.
