planet Okay from the main Tag (Forum) Listing https://broadbandbulletin.com/ find the tag you want to follow and click on it.
I chose the Open Tag (Forum) https://broadbandbulletin.com/t/open-forum
On the left-hand side, under "Start a Discussion" you will see "Following" Click on this, select following and then click on Confirm Subscription.
I'm using a Windows desktop PC, so I hope this works for you.