So my question is: why do I get this message?
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.
I think he does not mean that he needs to wait a day or two to get it fixed. Instead he loses interest doing it just because of the delay. I have never tried switching from bitcoin to another currency so I cannot say that it does what you say it do. Maybe that is also just a way to refresh or reload the page coz when you switch currencies, the whole page refreshes. I may be wrong though.