I paid for the x "Twitter" app and 2 months later it disappeared from Roku tv

Welcome to the Roku Community, Bigjim81!

Thanks for reaching out here and we'd like to provide further information about the app you are referring to. 

For app availability, we highly recommend directly coordinating this with the channel provider for further assistance. They manage and maintain their own app on the Roku streaming platform independently, and it may be possible that they've removed their app from the platform. 

You may reach them here for further clarifications: X Support

We hope this will be sorted out soon. 

Best regards,
Carly