[BAWITHLOT]

I don't know what I've done in my settings but I can no longer hear messages/texts etc.
When I tap to play them, they appear muted with a line through the bell symbol.
Any idea what I need to do?

The line through the bell symbol is just mirroring your phone. I have that showing on my display as I have the volume down on my phone but I still get my messages spoken by google!