Why has my mobile menu disappeared on the Dawn theme?

Hi, i have a large issue with the menu on mobile devices, it wont show up while pushing the menu button. If i click on it the picture in the back gone from light to dark.

My theme is Dawn

My page is:

www.dekanten.no

Hope anyone can help me out, i have tried lots of things without results. Im a bit frustrated now… Hope you guys can help me out. :slightly_smiling_face:

Im also wondering how i can change the font size on the productnames on the homepage. Thanks for now, im back as we speak.

@Dekanten - it is existing, I checked on view and can see like this