need key

I own a 2006 Prius. over 200k miles.

Several years ago, I downloaded techstream software ver 10.30.029 and purchased a mini-vci cable

After investing about a month into understanding why so many people were having trouble getting their cable to work, I finally got mine working so taht I could change all my brakes and bleed them.

I now need to identify the engine problem that turned on the check engine light, but I have forgotten the key required to operate the software. To be honest I never purchased the software and so i had to rely on the graciousness of some other person to obtain the key.

If i were a person making money off the software, I would feel very immoral, but I am a 72 year old guy just trying to keep his old car working.

If anyone can help me, that would be appreciated.

respectfully,
bil