Sometimes you may encounter this problem when making a payment of NFT
The MetaMask extension still keeps old session/cache and it causes the problem. We're working on the Product side to investigate and fix it.
Please follow these steps below to sort it out:
- Disconnect your MetaMask wallet from OP3N account.
- (Optional) Log out account
- (Optional) Log in account again
- Re-connect your MetaMask wallet
- Proceed payment steps