Welcome to the Roku Community!
I understand that you want to have a bundle subscription with Hulu that comes with Disney Plus and BET+, is that correct? Please be noted that the bundled packages are maintained by Hulu and Roku does not cover the bundle package the same.
Kindly contact Hulu to get the BET+ and Disney plus channels in the bundled package.
You can reach here: Hulu Support
If you continue to have questions about your Roku Pay subscription, feel free to contact Roku support https://support.roku.com/contactus