I am using an Orange SIM card in a static location.  The SIM card is a new one and the router only weeks old.

Using the TP Link tether software I need to change the setting APN to FLTE for connecting to Internet. 

Trying to change this setting is not possible as it seems to be locked as orangewrap using profile Orange World default 2.  Username is pre inserted as WAP.

How can I change the APN setting please?

Help will be much appreciated. Thanks!!

John