I receive notifications for apps that I use less than this, like Lyft. I manage my notifications very carefully, and I have never silenced Signal on my phone. Also, I don't go that long between sessions of using Signal — just apparently long enough to trigger this issue.

Yes, this was my impression too. When I turned that off, it started working ok. But this does not help on relatives phones, only on mine.

For others with similar problems, they have a troubleshooting guide including model-specific tips at https://support.signal.org/hc/en-us/articles/360007318711-Tr...