I have solved my problem. This is how I did it and it may help others to fix a similar problem. On the global compatibility list my modem was listed as compatible and not ISP specific. For Austria...

Region : Austria Model : TL-MR3020 Hardware Version : V1 Firmware Version : newest one ISP : Mobilkom A1 I have got my 3G Router 3 days ago and can not get it to work with Modem ZTE K3570-Z. I tried...