I can't comment on your technical queestions & yes eBay are certainly not very helpful. You have done the right thing asking to speak to a supervisor. I'd just keep trying & eventually you might get a person who can actually help.

As a sideline, I see you currently have approx 1300 listings.

I'm wondering if you'd be better off with a 'featured store' (which now comes with 1500 free listing per month) instead of an 'anchor store'.

The featured store is $54.95 per month (with slightly higher FVFs) versus $549.95 per month for an anchor store.