Two customers say they did not receive their item and eBay says the item did not ship. I used a eBay

[ms.collectibles24]

I have two orders that the customers did not receive and have filed a claim with eBay, I shipped the very next day after the order. eBay says I did not ship but on my computer screen it says shipped for a week now. What do I do?

[ms.collectibles24]

I used a standard eBay envelope with tracking

[lady_madonna]

@ms.collectibles24 

Do you have a tracking #/tracking information? Is the tracking uploaded to the shipping details on Ebay?