Podcast Subscribe button isn't working

I'm the one who misunderstood... When you said that nothing is happening, I thought you were expecting episodes to be downloaded right then, which is not the case. The podcast should, however, be added to the list of your subscribed podcasts.

I tested your RSS and it's behaving correctly. Try restarting your device.

Restart: https://support.apple.com/en-us/HT201559

I'm having the same issue. Clearing cache, warnings, and deleting the associated plist files has done nothing. This whole thing is a little disappointing. Oh well, I guess I'll use VLC or Spotify for my podcast needs.

i have this issue and still i can't subscribe to a podcast

You "subscribe" to future episodes. To get current or past episodes you need to download them manually, or use one of the options for how many unplayed episodes you want to keep in local storage.