Plugin is destroyed...payed for nothing

I paid a lot of money for nothing…on every script of my deals-calendar plugin I can read one and the same words:
Ö ATTR Ö ˜ > ˜ > q/0081;5c363c44;sharingd;D7063FFE-C0C0-402C-8ED7-D2B710837D16

Send me the right plugin script immediately or I will call back my money from paypal today

Where did you purchase it ?
i didn’t see your purchaser badge!!!