I used to purchase this temporary subscription, until a friend notified me that I was online, but I had incognito mode on. So I reached Grindr support on November 09th reporting the situation. After 2 or 3 days, an agent called Dan replied my email, saying that they identified a bug, but it would solved.
Since now, dezember 23th, after a lot of complaints and always the answer "thank you for your patience" my patience is over.
I'll start to spread and people "Don't purchase this product" because, even that they know about the bug, they keep selling it to people who doesn't know.