Hi @ariane-nickel,
Hope this message find you are doing well and having happy weekend with your family 🙂
Thanks for the message, we are very happy to help you 🙂
It is because a few function tooltips in the Pro Plus version have the same function name as in the WordPress Tooltips Free plugin.
In the current time, you can deactivate wordpress tooltips free plugin and then activate wordpress tooltips pro plus plugin, and we have finished wordpress tooltips pro plus 30.6.8 to solve the problem, we are uploading it to tooltips.org, you will see it soon 🙂
Thanks, have a blessed weekend with your family 🙂
Best Regards,
Wordpress tooltips plugin