Leave alone.
For a start, registry cleaners are all a waste of time and just as likely to cause problems as they are to fix anything.
Additionally, appround.biz is classed as an unsafe site, so it's unlikely that you'd even get the genuine version of this software from them, more likely a fake bit of software that would warn you about all sorts of non-existent problems and ask you to pay money to remove them
As you are getting pop-ups asking you to download it probably a good idea to run a full scan with malware bytes just in case