When I pick the "Insert a gym token into the vending machine!" option it leads me to a blank page, the token stays in my inventory, and my pets' stats don't change.

Was this on Kumos or legacy?

On legacy. It didn't even occur to me to check if it moved to Kumos, sorry. I guess that would be the solution if I can figure out how to find it on Kumos.

I found this under games: https://kumos.subeta.net/games/coin-machine It looks a bit different, so might be seperate. Let me know if that works for you!

I'm really sorry, I'm confused. How would I use a Gym Token in the Coin Machine?

I haven't actually used it myself, but the coin should show up in Your coins section of the page. I'm guessing you click on it? Does the coin show up?

Thanks for getting back to me. I don't want to use a coin. I try to use a in the Gym Vending Machine. It's a random stat booster. Or it was while it was still working. The issue might be that I try to use a deprecated link? But if that's the case how can I use the Gym Tokens? I'm obviously missing something. I don't remember when I last used it, must've been several months, but it was working then. The boots for kicking don't work either, btw.