How do I find and remove an image overlay? Also, Bearer api key authorization header error...

I purchased and loaded the Pubzinne template. Love it, but for the life of me, I can’t seem to find/delete/edit an image overlay that is appearing on internal pages. It’s the “The Best Beer” graphic… and it’s now appearing on pages that have nothing to do with beer. Is this part of the header? Where is it? Help please!

Also, with regard to using the SERVICES section of this template, I’m getting an api key authorization header error when trying to rename or edit indivual services posts… I can create a token… but have no idea where to put that and in what code. I don’t want to pay $149 for a plug in just to do that.