Problem upload a wallpaper

Hi, i cant upload any Wallpaper more. I will attach a Little Picture to explain the Problem pls help.


At the moment we can not reproduce the problem.
It might help if you tell us which browser and operating system you are using.

Thanks in advance for your support.

I try different Systems to upload at most png and jpg files/wallpaper. Linux 64 bit ( Google Chrome , Firefox ) Windows 10 ( 64 bit ) Chrome, Internet Explorer and Edge. greetings

The same problem in Google Chrome.

Okay, we tried to fix this problem. Can you try again, please?

It doesn´t work. i try different Systems and Browser again. When i try to delete a Upload i see a error message. I append a Picture with the ex

actly error message.