Upload Speed

Hello dear team,
Otherwise, I was always able to upload with just under 4 MiB / s with you. Currently, however, the upload speed is extremely low, at around 500 KB / s. I carried out several speed tests and couldn’t find any abnormalities on my part. I also loaded large files onto my own server and did so at the normal speed of just under 4 MiB / s.
Are there any server problems?

Furthermore, even if I let the upload run at 500 KB / s it does not come through because I get a timeout after 910 seconds and the file breaks off.
Do you have any explanations or information about what I can do differently so that this does not happen?

Best regards,