I'm registered with 3 PCs on Avast Cleanup. Can I can expand to 5 with this key?

A few weeks ago, I added a couple new PCs to the family network here, but renewed our subscription to Avast Cleanup before having to get the new computers. Is there a way to expand from 3 systems to 5 without buying a whole new key?
Thanks in advance.

Contact the avast sales department and ask them.

I tried contacting Live Support one or two weeks ago. I’ve been “processing” since. Is that what you mean?

https://support.avast.com/support/tickets/new

So Billing, not Technical?