Transaction error using Metamask, buying from Bazaar

Hi,
I tried to buy from gotchi bazaar, but when i press buy, the transaction using metamask mentions the total amount to be 0 MATIC + gas fees. Eventually, the transaction fails. I have tried this 3 times already with the same result. I can see enough GHST listed in the game. Any idea what the problem is ?

If you go to the developer console (F12 on Chrome/Brave/Edge) and go to the Console tab, do you see an error message?

Might have to change your RPC to https://polygon-rpc.com/