Hello,
Currently, we have some issues with firmware RUTX_R_00.07.01.4. and this RMS VPN HUB feature. This will be solved soon with an update to the platform. However, if you want to fix it momentarily you can downgrade to the RUTX_R_00.07.01.2 version where it works correctly.
You can download the firmware at the following link
https://wiki.teltonika-networks.com/view/RUTX11_Firmware_Downloads