Are you sure you taking the API key from Faucet Manager at FaucetHub.io (https://faucethub.io/manager/faucets) ? 
Im asking this because i saw your name in chat as a normal user.

Are you sure you choose FaucetHub.io as an service at Admin Panel Access ? 

If you confirmed this 2 things. I got no idea why its happen. Maybe you should wait for a new version to release or try another hosting provider.