Hi Martin
Sorry for the delay in response time. We have had unusually high support volume this week.
We are unfortunately unable to provide support through our Pre-Sales forum channel, but you can head over to The Events Calendar WordPress.org support forums for assistance and answers.
If you have a PRO license, you can log into your account and get assistance through the PRO forums. If you need to reset your password, you can do so here. This will send an email to the account used when you initially registered for the support forums.
If on the other hand you are not sure about all of that your first step will be to confirm if you are indeed running the Pro version of the plugin. You can do that by looking at your list of plugins. If you see the-events-calendar-pro in there then head over to Events > Settings in the side bar, navigate to the license tab and check to see if you have a license key filled in, in that field. From there it should tell you if its is expired, or if you need to purchase a subscription.
Thanks for understanding and good luck resolving your issue. Have a good day