I think you’ll have more success retrieving your things if you just stay on top of the facility manager. You might even offer a small ‘finders fee’ (don’t leave money with the facility – offer to pay when you get the items back). I can’t imagine why the auction winner would want to keep personal items like paperwork and photos, but I can see why they’d feel uncomfortable at the thought of meeting you. I’d make it clear that you would just like your personal effects back and don’t want/need to interact with the auction winner.
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