monbron, just because the logo is the same doesn't mean you got the right one. The fake ones can mimic the logos to perfection. To be sure you have the right one, I would uninstall whatever you have and then redownload and install from the correct place. The fact that you said you can only use it once leads me to think it might not be the right one because you NEVER get any message to that effect in Malwarebytes.
Fireplace, yarn, knitting needles, books, wine... check. Yup, I'm ready for winter.