[@정해홍] Today after I installed the software, this happened to me as well when my system failed to boot and asked me press “R” key multiple times at booting to remove the boot option of the software, but I could not. I kept restarting till I was asked by Windows setup to enter the Bitlocker key which I had enabled. Fortunately this worked for me and I was able to restore my system.
I am bit wary of using this software again. Beware!