Reactivating GT3 gallery Pro

This is the problem:

Hello, good morning.

I run into this problem:

I want to reactivate gallery Pro.

( I recently switched to Elementor, so I am building my site from scratch)

I have a license key but when I enter this and press check, I receive a warning that the activation limit is reached?

I do not understand…

Can you please help me to fix that?

Thanks

Johny Willemyns

The page I need help with: [log in to see the link]