Tapatalk glitch?

Whenever I post using Tapatalk on my Android phone or iPad, and chose to subscribe to the thread, I am not subscribed.

Common glitch? Solutions?
Many thanks in advance
Toons
( I’m posting this from my phone. Let’s see what happens. )

Sent from my SM-N910V using Tapatalk

When you post to a thread, the board automatically adds it to your subscriptions (I think you can change this in User CP: Options). If you post and then tap the subscribe icon, you are thereby reversing the automatic subscription.