Hi Chris,
Please take my sincere apology!
I have visited your admin area and found out the license key you have put there is a short one. The correct license key should be 32 characters long.
As I stated in my very first reply that the license key is located in your Joomshaper Dashboard. And I have attached a screenshot for your ease: https://prnt.sc/vesh66
So please copy the license key of your active subscription and put it on your SP Page Builder>Pages>Options(on the right). And clear your Joomla and Browser cache. Please recheck!
Hope this time it will solve the issue for you.
Best Regards