I got an email saying a member has responded to my reply. But I couldn't see their message in it and it didnt have the usual yellow and boxes the way the messages usually are, it looked more in html style.

I went to My Messages on eBay and had the same thing. My original message was for the buyer to reply with their postage address and Click & Send didn't recognise the address and postcode.

Could it be a scam even thought it was on My Messages on eBay in html style format?