Items being flagged for policy violation

I have listed 4 items for sale. All four have been flagged for "policy violation" which is, apparently, trying to "buy and sell outside Ebay". I am not doing this (I'm trying to sell them on Ebay, very obviously) and there is nothing in any of the listings which could possibly suggest this. Feels like an AI glitch. I have raised an appeal on all 4 items but have not heard anything. Any suggestions as to what I can change to list the items?

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Items being flagged for policy violation

Are you adding any kind of link to a third party website?

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Items being flagged for policy violation

So what are the items 

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