App stopped working

Hi all.

My Android home assistant app stoped working, I just get an all black screen. Then after a while options to wait, go to some settings and 3. Refresh external url, that doesn’t change anything… Anyway, I changed nothing. The App is up to date, last time I checked the the home assistant server was also up to dat, but now, as the app is down I don’t have access to it anymore.
I forgot how to log in via my laptop, IP:8123 is not working. Pinging IP is working. The IP address is not named in my router, its just showing as generic.
I tried to power cycle the pi my HA is running on, its not changeing anything.
Come to think about it I might not have accesed HA since I started an update of HA…
How to procede from this point please!?

It might be helpful if you said what app. Android or iOS.

Sorry, homeassistant app, was not aware that other apps existed.
HA os, is running on a raspberry pi 4B, wired network.
I managed to find the IP of the Pi i can ping the pi, but trying to acces through IP:8123 is not working.

There are 2 homeassistant apps, one for Android phones, one for iPhones

Ahh, sorry again Im using the Android HA app.

So now that all is on the table, does anybody know how to fix this problem?
Do I realy have to start all over, is there no way to fix this?
It feels like the most likely reason for the problem is a software update, but I always make sure I check the backup ticker, but if I’m unable to get in contact with the pi when I have a problem after an update, then the backup is worthless and I will probably pretty much stop upgrading when updates come out in fear of messing up my installation of HA OS.

Hi, to me it’s not clear whether it’s your companion app (on your mobile) that is not working or your HA server from what you wrote.