Hey Janos,
I'm sorry for the troubles, but you are sharing the blame for this issue
You haven't purchased a subscription for Hotspots, but for CComment. CComment is a different extension and it doesn't give you access to the Hotspots PRO package.
Navigate to this page
compojoom.com/joomla-extensions/hotspots
Select the subscription you want and purchase it. After that navigate to the Hotspots download page and you should be able to download Hotpsots PRO. If you don't immediatly see it in the list, log out and login again.
I'll refund you for the Ccomment subscription in the meantime, unless you want to keep this awesome comment system for Joomal?
Regards,
Daniel