On my galaxy phone, I do a search and find the show I want to put on my watchlist. When I click the add icon, the screen changes to the homepage with a message that says I’m already logged in. It does the same thing when I press the Add button from the show Details page. The show is not added.
I have a screen recording of the interaction, but the forum does not allow recordings. So I have uploaded a screenshot.
This could be related to an ad blocker or VPN. Or you could try signing out then back in to see if that helps. The error is related to your browser cookies not being read correctly, a re-sign in usually fixes it.
