Activation email link not working

Hi everyone, I'm new here. I've just downloaded the free version of DS2019 and waited a couple of hours for the activation email to come through, only to click on the link and be given the message that 

Error

There was an error processing your registration.

Visit the DraftSight Community to review possible solutions or to report a problem.

So, here I am, in the DraftSight Community! Can anyone help please?