Hi Robin,
Thanks so much for reaching out! I’m afraid that there are no built-in integrations available for any membership plugins at this time–and since any given plugin is likely to store data such as membership numbers in a different way, any possible automated solution would need to be custom-developed. I’d suggest having a look at our Themer’s Guide before diving in here! You should find it a helpful reference for whatever projects you’d like to pursue.
https://theeventscalendar.com/knowledgebase/themers-guide/
If you’d prefer to assign any development tasks to a third party, we also maintain a list of developers on our Knowledgebase who are happy to take on projects related to our plugins:
https://theeventscalendar.com/knowledgebase/find-a-customizer/
I hope that helps to get you started here! 🙂 Thanks again, and let us know if you should have any other questions!