Hello,
1. When I look into WordPress > Layer Slider WP: I see: PRODUCT ACTIVATION Not Activated (in red).
By mistake I purchased a license code for the slider, but I have not used that code for the activation.
Yes, you told me the license for the slider is included in the Enfold license.
Is the Not Activated note the normal case, or could that the reason for the error described below where I have 2 urls at Flywheel.

2. How to find out the reason of different behaviour of a
– correct working slider on my Staging Server at Flywheel
– and the _not correct_ slider on the production server.
Error: On the production slider the background image does not show up when the slider starts.
The text and a image work fine with a delay of 555ms.
When the slider is changing to the next slide,
then the backgreound image is presented.
All settings in the Slider are checked and I can not find a difference.

thanks