I believe the WebUI in RUT2XX_R_00.01.14 is not applying the APN Username and Password configured in the WebUI. I have an issue where the mobile interface will not connect/authenticate to my custom APN.
When I run uci show network, there are no username or password values being set for the PPP interface despite them being displayed in the WebUI. If I manually add a username and password value via UCI commands to network.ppp my connection to the custom APN works fine although settings are lost on reboot.
I can see the APN username and password are visible in /etc/config/simcard, but it seems like this config file isn't being referenced by the connection?
This looks to be a firmware bug possibly.