License error: license exhausted

I redid my laptop and I got this error when installing the license "license error: License exhausted:
I have a copy on my desktop Do I need another license for the laptop.
I remember when I first bought smartFTP a long time ago it was 2 computer
I hope this didn't change.

You can deactivate the old activations in the customer area under Activations:
https://www.smartftp.com/customer

Will the old versions still work?
how many computer can I use a Single lisence on?

Please contact sales with your license id.