Of course I have WOFF UE.
Bought it on Day 1, installed it, never had an issue.
Started having W10 issues recently though (thought at first it a HD failure) but got it figured out and decided to try a Windows "reset" instead of a complete wipe of things.
This reportedly resets just Windows leaving your "files intact." Sounds good! And it worked fine - all files intact - but essentially worthless as the reset wipes the registry, i.e., WOFF would not work. Okay, no sweat, just do a quick reinstall of UE just to get the registry settings back. Done except now WOFF UE wants my original registration code.

Again no sweat I figure. I have UE saved to two separate HD's, a DVD, and a flash drive for safekeeping and did the same for the code except...yes you guessed...I can't remember where, in the 3 or 4 places I probably saved it, it is.

Old age! Not all it's cracked up to be. Gonna dig around some more, before I crawl like a dog to OBD Support, and ask what it is. This time I'll save it to 6 or 7 places so I can find it.