Thanks for your question.
This feature looks like it is part of your theme at first glance, unless you are using an app? Please let me know which theme you are using and I'd be happy to look into it further to see how you can add more product description tabs.
I look forward to your reply,
Thank you for clarifying, @George230.
In this case, it will likely require code changes to increase this built-in limit. Since this is a third-party theme, I don't have any code suggestions to provide you with at this time, but I open the floor to our community members and code experts to share their thoughts.
If you are interested in using an additional app, I can certainly help explore that for you further as well - just let me know.
Hi again, @George230.
I have been monitoring this thread with you to see if we can get any free code or alternative advice from our community members.