I have upgraded my Free version to 7 and now cannot use as offline

I upgraded my free version to 7, and now when I launch, its saying it’s going offline (but just all hangs) as it’s saying there is something with the certificate and I cannot click the Connect buttong. I want to upgrade my licence, but now is telling me I cannot upgrade a free licence, thus rendering the whole thing unuasble! Please help!

Hello Jayne,
FREE licenses are upgraded automatically.
I see that you have one FREE license and one PRO license which is only for version 6 and older. Both seem to be activated.
If your eM Client says the license is not valid, either upgrade your PRO license on use the FREE license on this device.
If you need any additional help, let me know.

Regards,
Olivia

Hi Olivia
I would like to upgrade my Pro licence ideally, but it’s telling me the key I have is only for the free version, so if you could let me know the key for the PRO version directly via email then I will do that, and hopefully all will be OK.
Thanks
Jayne

Hello Jayne,
I generated a reset email for you from our server, you should receive your License information shortly.

Regards,
Olivia