[GSAP animation does not work in FF and Safari.]

Thanks @SteveS for your help.
I have found the problem. It is as you said. ScrollTrigger was loaded before all element in DOM were ready.
I have now set a timeout so that there is enough time.

[GSAP animation does not work in FF and Safari.]

@SteveS Thank you. Sorry I'm working on the page right now and took ScrollTrigger out for a moment.
Now it's back in.

[GSAP animation does not work in FF and Safari.]

Hello together,
I am in the process of creating a website. On the page there are some animations. In Chrome everything works great but in Firefox and Safari the start and end points of the scroll trigger are shifted very much downwards which causes the animation to run too late.
The site is built with wordpress and the Oxygen Builder.
Anybody have an idea where the problem is?
Link to the page: http://klocke-agentur.de/kunden/doerries/
Thanks for your help.