Within virtual boundaries it doesn’t make noise. Once I removed them it started working. 

I’m having the same issue. Watch doesn’t receive notification for text messages. Watch is brand new, I haven’t setup boundaries yet. Did you get it to work?

We were experiencing the same issue.  What fixed it was holding down the main watch button for a few seconds and setting "restart" from the menu that pops up.  After it rebooted, the text sounds came back. Hope that helps.