One license, two computers?

Hi,

I just bought CCleaner Pro download version.

I entered the same key on 2 computers, and it's working, my 2 computers are now running CCleaner Pro.

And I just checked this page :

http://support.piriform.com/hc/en-us/articles/204044464-How-many-computers-can-I-install-CCleaner-Professional-on-

Anyone can help me sort this out?

Thanks in advance!

Contact Piriform Support for a definitive answer, there's nobody here who can speak on Piriform's behalf.