Pictures are not sent via Mobile Clients


i am new with rocketchat.

My server works fine, only sending pictures via Android/IOS app doesn’t work. This also keeps me from going productive in our company. I’ve already spent hours googling and adjusted client_max_body_size. File Uploads Enabled in Direct Messages: True. Changed from GridFS to FIle System an back…but nothinks helps. The Mobile Clients are trying to sent the picture an then fail with the message “error pls try again”. Desktop Clients are working fine, we can sent pictures and files acroding to the client_max_body_size. I hope someone has another idea…

Server Setup Information