Android O notification problem

Hi all,

Updated to Android O the other day.

I'm having a problem with Notifications though. Whenever they come through I get no sound. It vibrates (if told do so) and the light flashes.

I've checked the Notification channels in the settings of both the app and general settings. In both it's told to make a sound but nothing, nada.

I'm new to this notification channels stuff so wondering if I had that set up wrong. The apps are set at Urgent level (make noise and pop up on screen).

Is anyone else having this issue? Can anyone help?

Thanks in advance.

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