Is there a way of cancelling it when it comes up with "subscription for this thread has been removed"?

The number of times i been trying to open a thread on my phone and its decided to take me off subscribing to the thread its getting annoying

I know its cause my phone is a old fart that was roaming around looking for the internets when the dinosaurs were roaming around, so less and less works on this old fart, i just want to be able to subscribe to threads again after my old fart phone undoes the subscription to threads

I have to post to get subscription again but it wont always re subscribe me cause this phone is a old fart