Hi ukaszim1,
perfect, in English then. 
Since we can't read your first post here, I'd like to ask you to explain it again briefly in English.
When and at what times do the upload problems occur most frequently? Do you just use our hardware or additional devices (Routers, Switches, e.g.). Are you connected via LAN or WLAN?
And last but not least: Please send me a private message with the following information:
your name
your address
date of birth
your customer number
the link of this thread
Please reply here when you have sent the private message.
Regards
Stephan
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