Test message

Edit:
I posted the above message by subscribing to this thread, then doing the following steps to do post it using the app:
1. click on subscribed at the bottom of the screen
2. choose a subscribed thread
3. use the page numbers at the top of the screen to scroll to the last page
4. select the last page
5. scroll to a post to reply to and select it (I tried the last post)
6. click on reply button at the bottom of the screen
7. compose reply and click done, then click submit
8. go back, then back, then back again to list of subscribed threads

Result was the same, the subscription vanished from my list. Maybe you can try checking it out in the same way?