Thank you for the courtesy of your response, nukecad.
I meant to convey in my original message that the trackers issue is not especially concerning to me, since I understand that they are not uniformly malware. I also understand the exigent dangers of sharing financial information online with strangers; I haven't done so in this case.
I wrote because I was surprised to see a reputable site like Ccleaner hacked in a way that was so visually convincing, and that managed to slide in under my anti-virus programme (Bitdefender). Even before I received your answer, I deleted the app and reinstalled it: the hack has not since reappeared.
The issue of what type of license I have (good for 5 devices; I use it on 2) will be resolvable once I read the link you've provided.
Again, thanks for your help.
gbb