Hi @Mimi13,
A warm welcome here in the Roku Community!
We appreciate you reaching out about this. I did try this on our end, and we are able to see the sign-in and sign-out options to proceed. We would recommend trying reinstalling the channel once again and see if that works.
See for more information here: Pure Flix.
Let us know if that works!
Thanks,
Rey
ERey.
Roku Community Moderator