@EdgarArana91395
Thanks for your reply.
Because of your positive response I tried to change some browser-settings and I found,
that the Partner-Locator is incompatible with the "uBlock Origin" - Adblock-AddOn.
On one hand I am happy having found the solution, on the other hand I am a bit disappointed that this page is coded that complex? strange? so that the Adblock-extension kicks in...
Well, problem solved.