So you can’t read your xNT since you setup your pin in Rohos, is that it? That’s odd because as far as I know, the only way to lock yourself out of an NTAG216 is by setting a password and forgetting it. However, Rohos doesn’t work that way: it only messes with Mifare Classic sector keys, and reverts to UID-only if the chip isn’t a Mifare Classic.
Or are you saying you locked yourself out of the computer - i.e. Rohos won’t let you back in?
Another way to answer my question is: is the chip readable with a cellphone? 