That happens to me as well. If you are not using Mozilla Firefox, switch to it. It doesn't happen as often on Firefox I think. It's usually easy to fix. Reload the page and it's usually gone after one or two refreshes. If you don't have a second currency on your account, add one. I found that it helps if you switch from bitcoin to the other currency and back to bitcoin again. Whenever it happened to me, I never had to wait for a day or two to get it fixed. Be aware that you can only claim the faucet 5 times max in a 24-hour period.