Zoo rhino license code - server error

I tried to register a rhino zoo-license but I get a “server error”.
and I get the same message when I try it manually. When will it work again?

What kind of ‘server’ error? Can we see a screen shot? What version of the Zoo are you using (Help -> About)?

hello: the server was not available for several hours, but know it worked as it should.
It was probably shut down?!

the problem has been solved, I could add our third license