@BAS-Viet-Nam Okay, thank you for the hint. Worked on many sites with these 2 functions without any problems. So I will try it with "Wait while element exists" on this specific site.
Hopefully I don't get in an endless waiting-loop ;)
@lymz101 Well, it's a file with data, not an answer in json format, save it to disk and from it already take a random string for example, and then it should be parsed