Don't worry. These network settings is a program from Asus. It's not necessary to use it. It's only to configure settings in your phone to be able to connect to internet. You can use the same tool from Microsoft (settings, connections, connections and "automatically configure connection").
These ROM is stable right now and have only few really minor bugs. The rollback procedure is easy - just download from Asus your old ROM and after connecting your phone to the computer run this program which you downloaded.
these cab solved the problem - install.OBM.NetworkSetting.CAB