Installing CCleaner Professional Plus on 3 Computers

Bought Pro for 3 computers. How do you get it on the other 2??? Got the purchase acknowledgement with the download link. When hit the link, it takes me to a page where you can download the limited free version and the enabled Pro version. When I click on the enabled version it wants more money. ? What to do?

Have a read here Mike.

https://community.ccleaner.com/topic/58356-installing-ccleaner-professional-plus-on-all-three-computers/