VGate BA100 #245

Hello, This is exactly what I am looking for to get my battery monitor to speak to home assistant. However, I am struggling getting this working - I have this VGate BA100 (https://www.vgatemall.com/products-detail/i-25/) which uses BLE4 and I was wondering how I coul get this working. To check the voltage, I use an app called Battery Asst from the AppStore and from what I can see its similar to BM2 but can't get it to work and I'd be grateful for any advice to get this to work. Thanks