[@Hadrianus]
Sorry, Hadrianus, but who are you ? Do you belong to Shareware on Sale management, and is this an official answer ?
That’s the post box I was referring to. A post box in a “business center” does not generate a lot of trust. Anyone can buy such a postal address.
Where does your information come from ? It’s nowhere to be found on http://www.kryptel.com.
Flex Hex editor published by a company with a similar name (but no mention of Kryptel) :
http://www.flexhex.com
Similarly-named company located in Russia :
https://www.reasoncoresecurity.com/signer-inv-softworks-llc-3e6406be1aa08f05347f12fb3f5e1550.aspx