Draftsight free version Activation

Hello, I have used Draftsight free version for many years and always have the problem with the activation / registering.

I fill all the form out at the very beginning of the new version of draftsight but when I go to go back in the software again it asks me to activate it.

Well I already have. I have lost count how many times i have activated my register for draft sight.

Can anyone spread any light on this as it is rather annoying when you want to use it and it asks you to do something you already have done many times before.

Thanks in advance.