| Joana |
I actually don't know. I've never used the Hide feature on the Campaigns tab.
You might consider asking in Website Feedback, with the caveat that the web team seems understaffed at the moment so you might not get an immediate answer.
In the meantime, you should be able to find the threads by going to the alias you used in the game and clicking on its Posts tab, then on the time/date stamp to get into the game thread itself. A bit of extra clicking, but it's a workaround.