Thank you guys for supporting me in those dark and hopeless times! I was blind before but now i can see red...;-)
It was Johnz who made me think about what the heck FOMA means and i thereby learned a new expression. Patience was advised and it worked.
Now i want to know how i can change it back.

No, just kidding. The mobile version has still not changed and i'm just right now adjusting on my pc (Windows and Firefox) to the new look, find the red a bit demanding to my eyes, and on the mobile i have the samsung standard browser, so maybe that's why it hasn't changed there.
But curious ans stupid at the same time as i am, i would like to understand how this can be.
In my mind there is a change under the same address and so anyone who goes to that address must see the change after its done. But it doesn't work like this obviously.
I tried to log in and out, tried to go to the homepage and then go to the board from there and in anay case in my understanding it should have been the same address anyway.
It seems to be a browser thing, but i don't get how that can be.
Anybody who knows how these things work feel free to enlighten me, but i also can live without the answers and the wondering how these magics work.