I got the same message just now. I went away 1 hour ago, or 30 minutes before the last league ended and the daily reset. Ended up being placed in 56th place. When I came back 25 minutes after the reset, I see this lovely message:

" You missed the current leagues enrollment. You will be included in the next league starting in 6d 23h 35m."

No idea what Kinkoid is doing... And I am kind of annoyed with this development. >.<

But I filed support ticket through nutaku anyway...