General Forum

I recevied my match alerts (trade/sale) today and find several cards on it that I do not have.  Several mppnths ago I find some also and remove them.   I had to  correct a couple of trades due to the fact cards were showing up in my trade/sale list that I do not have.  At tis point I'm thinking it was my mistake as there have not been many.   

Just wondering if there may be a problem that I do not know about.