Good evening Jorge and welcome back!
Thank you for reaching out to us.
I would love to help you with this topic.
How can switch domains in order to still have full functionality of the product.
I believe you will find all the answers you need here: https://theeventscalendar.com/knowledgebase/using-one-license-live-dev-sites/
Here is the message that is shown.
It looks like you’re using Event Tickets Plus, but the license key is invalid. Please download the latest version from your account.
Yes, this message means that you are unable to automatically update the plugin from that install.
The article should walk you through your options to work around that.
Let me know how that goes.
Best regards,
Geoff B.