Same, it's frustrating as hell. When I say I'm on Signal and to catch me there, they're like "Oh...don't worry, I'll just SMS you". 🤦 I'm having to install WhatsApp soon because the sheep are too stupid. I'm trying to keep it private -- GrapheneOS, use a VPN, use a fake name, and deny all permissions except to receive messages & calls. They have no idea how much trouble I'm having to go to, all because they won't use a private messaging app.