slide menu vs mega menu

Hi

I'm not sure if at this point and with the css added, it makes sense to change the orientation, if you read the previous posts you'll see what I mean.
But if this solution is better, I would need to know that I have to remove it to work, and some html example for the header.

this thread started with an incompatibility between the theme and a mega menu plugin

The issue in your screenshot is caused by your logo being too big. I would agree that using the mobile header option is your best bet, as the code already exists and the result is what you're going for. I don't think it would cause any issues with your earlier customizations.