Hi @Avaxint,
Thanks for your first post here in the Roku Community!
We understand that you have a query about removing and reinstalling a channel. Please be advised that if you are removing a subscription channel billed to your Roku account, you must cancel the subscription before you see the Remove Channel option. For help identifying this type of subscription channel, visit our support article here.
Moreover, make sure to restart your Roku device before adding back the Acorn TV app.
Please keep us posted, and we'll continue assisting from there if needed.
All the best,
Chel
Jecheal R.
Roku Community Moderator