How to access huawei 4g dongle Android APP

Hi everyone.
I have a dual WAN setup going on, and everything works fine so far, except when I want to get into the Android APP for the Huawei AI Cube.

I can reach the huawei router’s config page if I type in the IP address on a web browser, but if I try to get in thru the app it says I’m not connected to the correct WIFI.

My only reason to use the app is because it has a “Best position” function that helps me move the 4g router around in order to find the best signal (which is something I have to do several times daily due to bad coverage).

Is there anyway to do that?

Thanks in advance.