Not sure if you'll be back to read this, or if you managed to get the issue solved, but on the odd chance it helps anyone, the best approach with eBay reps who are insisting on A being the case when you know B is the case, is to calmly and efficiently use the Socratic method of questioning.
I had to do this recently when I had to get a dispute closed, plus some related neg FB removed and a charge for a postage label that a buyer never used (false INAD claim, buyer processed the return label, never returned the items, but left neg FB - I had to first get the case closed due non-return of the items within the allowed timeframe, then use that as the basis for getting the neg removed, then get them to clear the charge for the postage label - that last bit was the hardest, though with each issue I had to keep bringing them back to eBay's explicitly written policies and ask why they weren't being applied. With the postage label, I got transferred multiple times and each time the rep would get on to chat, say "let me just catch up on the case", spend 5mins looking at the whole chat log only to come back and say "sorry, you've been transferred to the wrong department, I have to transfer you somewhere else" 🙄 Very frustrating but the whole time I was just 🙂-ing politely and thanking them for assistance so I could point out my non-disputable facts to the right person - didn't get the charge cleared, but did get a PayPal payment for said amount within 24 hours while the charge was debited from my bank account a couple days later).
Anyway, my point... The best thing to do is not just ask something like "why aren't my funds being released?" or "when will they be released?", you say something more like "I'm confused about why my funds are still on hold when according to eBay policy, they qualify for release". And then you just keep bringing them back to that, no matter what they say, if they say "the buyer needs to leave feedback" demonstrate that you know more than they appear to, and say "I understand that's the policy when there is no tracking provided, but this order had tracking and the policy in that case is that my funds are released" - keep asking why their policy is not being applied, not why you aren't getting the funds or similar.
