Menu on Iphone ( made into header) missing after changed code

yesterday I was gonna add amazon affiliate code for mobile popups b/n the fooder and header section of php. Well I did as instructed by amazon and nothing happened. I went back and removed the code and now my menu doesn’t work on mobile ( it is on the header on my mac and it shows up under the three bar section that shows pages, etc on my phone. Also the Jetpack, fb stopped working.
I KNOW the code is not correct b/c when I tried adding what I thought I accidentally deleted when put amazon stuff in, none of my sidebar showed up at all on my mac, so I deleted the code that I thought was correct.

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