Hi @Jimi99,
Thanks for reaching out to us here.
May we know what specific error code you receive when accessing the Max app? Also, have you tried removing the channel, restarting the device, and adding the channel? You can also try to check for the channel's update by clicking the Star button on your remote.
Please let us know if this fixes the issue.
Regards,
Janadee
Nadee K.
Roku Community Moderator