The email or litecoin address you specified is not registered with CoinPot. We use CoinPot for all faucet payouts - please register a new account first.
Like Potato Chips mentioned, you might have entered a wrong email ID. Go to your Coinpot dashboard, account details, check linked accounts and addresses.
If you want to log into Moon Litecoin using your Litecoin address then go to Coinpot homepage, find your wallet address, enter your Litecoin address, verify using a signed message, your wallet address would be linked to your Coinpot email id, and then log into Moon Litecoin using your wallet address. Better to simply link your Coinpot account to ML.