Your uninstaller. [SOLVED]

I downloaded Your Uninstaller! Pro v7.0.2010.11 and installed it, but the registration is not working.
I copy paste name and serial, I press ok, but it stays in trial.

Hello,

Did it give a pop-up after registration? If yes, what did it say?

It says it is registered, but every time I start it I get the Trial reminder.

Hello,

Did you install another version before this one?

No. But it is not the first time I install this version. Can this be the problem?

Hello,

I had this problem on another PC too. Sometimes it'll cause problems if you try to reinstall it on the same system.
Try removing all the program's strings from the Registry, if possible. (While having the program removed from your system)

I found 2 strings in registry and removed them. But apparently that wasn't enough.
First time when I installed id, I did it just to see what can it do. I was hoping it has batch uninstall.

Hello,

That's sad, I don't know what to recommend, as I haven't tested further on the other PC.
Try Revo Uninstaller, it's a great alternative.

Hello,

So I assume that one is working fine for you?

yes

Hello,

That's great! Enjoy the program and please let us know if you need help again.