Sigt devs helped them to solve their issue. So now there should not be any problem anymore.
Since (4 days ago...) they keep saying "we are importing the keys". I don't know if they are too busy, too stupid or if it is a voluntary coin/price/volume manipulation from craptopia but it's shit.
I have a few coins on craptopia, once the issue is solved I'll withdraw everything and close my account on this shitty exchange.