Great mobile app - but one bug. iPhone 5 + 6. If a poster is blocked but is the last one posting on a thread, the participated and subscribed lists still are updated. That seems correct. However if the user selects the thread, it creates an error if the blocked user is the first post on a new page. It will say something like page 31 of 32 and try to display the new page, but the blocking filter kicks in and prevents display of the post - so the app errors out.
You could test by creating 2 users, block one, fill a page (probably relevant only to the specific device settings on how many lines per page), make a new post by the blocked user and try to display it from the other user.
Otherwise great app - can you make the pink color user adjustable?