Can’t get audio to resume when re-entering a scene for the second time

Hi there.

I’m using DoNotDestroyOnLoad to keep my menu music going through my main menu, options, level selector etc.

I used a code to pause the menu music when entering level 1 but, when I go back to the main menu, after completing level 1, no matter what I try the audio will not unpause or start again.

I’m very new to unity and c# so if anyone can tell me how to seamlessly unpause the music in the main menu or start it from the beginning again that would be very helpful and much appreciated!