Hi,
I have added malwaretips.com to the cookies to keep section.
I also run Wisecare 365 and Kerish doctor but cannot find anything for settings on these at the moment - any guidance appreciated.
Wisecare 365 by default does not scan/clear for cookies so if you haven't changed this settings you should have no issues.
Kerish Doctor 2017 has a lot of features, and this is the first time I've taken a look at this program, as far as I can tell it won't clear the cookies. Other members that use this program more often may be able to shade some light here.
So basically, Ccleaner should have been the culprit in this case, if you added our community to the "Cookies to keep" list, you could give it a run and see if you are requested again that verification code.