Does my CCleaner Plus subscription allow me to use on my desktop and a new laptop I just bought. If I can do I just download on laptop and use my current product key?
A CCleaner Professional Plus licence is valid for up to 3 devices so it's fine to do that.
To install on a second or third Windows device:
Download an installer for the latest version from here: <a href="https://www.ccleaner.com/ccleaner/builds" ipsnoembed="true" rel="external">https://www.ccleaner.com/ccleaner/builds</a>
Double click the downloaded installer and it will install CCleaner Free.
Go to Options>License Key and input your registered name and key to register it as Pro.
You can use the same key on Mac and Android devices, or a mix of them all.
It's a similar process if you want to put CCleaner Pro on a Mac or Android device, but you have to get the installers from a different place.
Be particularly careful to follow the guidance linked below if putting it on an Android device. If you already paid for Pro Plus then you don't want to buy another licence through Google Store.
See the guidance here which also includes installer download links: <a href="https://support.ccleaner.com/s/article/how-to-register-and-activate-ccleaner-professional?language=en_US" ipsnoembed="true" rel="external nofollow">https://support.ccleaner.com/s/article/how-to-register-and-activate-ccleaner-professional?language=en_US</a>
Thanks!