Found this

https://inedo.com/support/kb/1758/automatic-license-activation-not-working#workaround

I just did a install of Proget Free and I am getting a licensing error. I click activate and it says it activated, but I cant add any feeds, it just keeps taking me back to the license activation error page. I have internet access. Any idea what step I missed

Activation status:
The license key has not been activated. [activate]