Look at this joke about 1xbit security support team:
https://i.imgur.com/e6b7czk.pngHow can it be possible? calling a department as security and answering non sense stuff
Looks like another problem from 1xBit, I really think that's really a joke. I think you should not be waiting for their reply since they doesn't really have any intention of paying you they might just do that to say that they are doing "something" about your case but in reality they really don't care about you.