Can't Activate License Key

[dluhop]

I'm running CCleaner free on my laptop. Yesterday I purchased a license key for the Pro version of CCleaner. I can't activate the license key. I get the following error message:

Does anyone know how to fix this?

[nukecad]

As it says you can try again later, it looks like a server issue.

Or you can contact support for help:

You can use the form here to raise your request:  https://support.ccleaner.com/s/contact-form?language=en_US&form=general

Or you can email them directly: support@ccleaner.com

Please be aware that support are very busy at the moment and although you will get a ticket number when using the form, and an acknowlegement email, it's taking much longer that usual for a person to reply.