I'm not sure about faucet.blockbolt since it's a third-party faucet. The issue could be related to the faucet's maintenance or rules. You might want to try another faucet like https://faucet.n1stake.com/. It's possible the Discord faucet is also under maintenance.

Most faucets, including the official Sui Testnet faucet, have a daily or 24-hour cooldown period per address to prevent abuse and ensure fair distribution. You likely hit the limit for your address. Just wait until the 24-hour window resets, and you should be able to request more. They don't typically allow requests every few hours.