South G7 no rtk correction BASE MODE



I have a problem with the south G7 and mavic 3 E RTK, basically if I connect the mavic to the national RTK network I have an acceptable error around 3-4 cm, if I connect the drone to the south instead I can’t lower the error below 4 meters.
I have the impression that it is misconfigured in the G7 web server because in survX the measurements are accurate.
Would someone be kind enough to send me the G7 screenshots regarding the coordinate system or any other ideas I can solve this problem?
Thank you very much