https://community.ebay.com.au/t5/Selling/When-I-try-to-block-I-get-Invalid-ID/m-p/608880#M34432 <P>Have U put in a space before or after the ID? &nbsp;</P><P>&nbsp;</P><P>Have U put CAPS or vica versa, or is there a capital in the ID that U have not put in?</P><P>&nbsp;</P><P>Someone more experienced might know if U have to cancel the buyers bid first.</P> Mon, 12 Aug 2013 01:48:55 GMT peridot55555 2013-08-12T01:48:55Z https://community.ebay.com.au/t5/Selling/When-I-try-to-block-I-get-Invalid-ID/m-p/608686#M34430 <P>I have had trouble &nbsp;with a buyer he bough but didn't pay and now he has bid on another item &nbsp;so when I try to block him I get an Invalid ID</P> Mon, 12 Aug 2013 00:38:22 GMT https://community.ebay.com.au/t5/Selling/When-I-try-to-block-I-get-Invalid-ID/m-p/608686#M34430 sandsofife 2013-08-12T00:38:22Z https://community.ebay.com.au/t5/Selling/When-I-try-to-block-I-get-Invalid-ID/m-p/608880#M34432 <P>Have U put in a space before or after the ID? &nbsp;</P><P>&nbsp;</P><P>Have U put CAPS or vica versa, or is there a capital in the ID that U have not put in?</P><P>&nbsp;</P><P>Someone more experienced might know if U have to cancel the buyers bid first.</P> Mon, 12 Aug 2013 01:48:55 GMT https://community.ebay.com.au/t5/Selling/When-I-try-to-block-I-get-Invalid-ID/m-p/608880#M34432 peridot55555 2013-08-12T01:48:55Z