The way I get around the syncing issue is to set my syncthing to sync when my phone is charging so it’s very unlikely to not be in sync, or if I change a password on the PC I’ll plug my phone into a USB and it syncs straight away.

I also use KeepassDX on Android and never have those issues.

https://downforeveryoneorjustme.com/cs.rin.ru

Tango down

I would ssh into the opnsense box and press 8 to run the shell terminal and then run dmesg and go back to the time the server rebooted, there you can see the events leading up to the shutdown.