Can't manage signatures in Adobe X Standard Help!

[Andrew238405898pby]

Can't manage signatures in Adobe X Standard 10.1.16.

There are correpted signatuers which I need to remove and can't - there's nowhere to find it easily as all.  Errors messages pop up even when trying to apply a newly created signature. That's all I can do - create new ones, but not manage the old ones!

P.S. Registration has never worked (this is a  legit copy that came with my Fujitsu ScanSnap Scanner) 

Please help. I'm getting very tired of Adobe's exhaustive and combersom settings menus.

Thanks!