Thanks for your patience while we investigated the issue.
If you are experiencing an issue with HBO Max not playing after enrolling with a free trial to HBO Max, we wanted to reach out as we believe we have identified a workaround to allow you to access the HBO Max channel. You will need to change your password by going to HBOMax.com and logging into your account. Once you have logged into your account, select your Profile and on the top right corner. Once this drop down list appears select Account and then change your password to a different password. This should allow you to then be able to log into the HBO Max channel on your Roku device.
HBO Max is also working on releasing a new channel version which will have a fix for this issue however, this workaround should allow you to access the channel in the meantime.
You can find additional information on how to change your password or perform a password reset if you forgot your password to your HBO Max account here:
https://help.hbomax.com/us/Answer/Detail/000001266 - Change your email or password
https://help.hbomax.com/us/Answer/Detail/000001261 - Forgot my HBO Max Password
If you have any questions or concerns, regarding performing these steps we recommend you contact HBO Max for further assistance with changing your password: https://help.hbomax.com/us/ContactUs
Roku Community Moderator