your hooked element, starts with a core columns block, which isn’t required.
Can you simply move the Container Block to the top level, and then delete the columns block
And then delete the empty text block below that.
Did you create that Element ?
If so then edit the Element, and from the top open the list view. You will see there is a Columns Block, and inside that is a GB Container Block.
You can Click hold + drag the GB Container Block out of the columns
How odd, on the front end there is additional HTML for a columns block. I wonder thats come from.
Is it possible to get a temporary admin login to the site ?