Home update on app

Why does my app struggle to switch to Home rather than Away info...? My service provider is TalkTalk and rarely drops out...

Your phone and inverter need to be on the safe WiFi network, so no guest mode or IOT network for the inverter. Assuming both are on the same network then it is good practice to reserve an IP address for the inverter so that your router will always allocate it the same address. This will make it easier for the app or any other local solutions such as GivTCP to find it.
Reserving an address is done by your router so you will usually need to log on to the router control panel or use its app in order to do that. Search online for your make and model of router or ask your ISP for help on how to do it - they may also have guides for configuring the router on their website.
Unless you know a lot about networking it is almost certainly best to reserve the address that is already allocated to it - it will make no functional difference beyond certain addresses being easier to remember than others.
Once the address is reserved press the "hamburger" menu icon, go to Settings -> Local Monitoring and add the IP address of the inverter in there.
If it all works and the inverter is found you will get a green tick.

In my experience it has worked sometimes and not others. I have not done anything between either situation.

The only thing that i think might with WiFi connectivity.

I've recently had a second battery added so now the app views the gateway rather than the battery, I've lost the away/ home options in the app, they aren't there so it only updates every 6 mind, how do I get home away back up? Thanks

Let us know what you do to make it work