It so happened that I had to reinstall Windows 10 :(
I try to reinstall rXP GTN with "rxpGTN-750-XPL.exe" application.
I click to "Reinstall application" button, then select my key file, then last 4 digits of my card.
Then i see a message - "RealityXP....blablabla... has a valid registration to D....... blablabl...."
Afrer i continue installation, selecting folder, accept agreement, select only "X-Plane 11" plugin, then D:\X-Plane11, then I uncheck (if it checked - i see a 404 error, but it is not important - i have a installed Garmin Trainer) a "Download and install thr Garmin...", then next-next and installation Complete!
But, after that manipulations, i don't see a RXP in Plugins menu of X-plane :(
Please, help me solve it