ebwin sent me this link for testing:
http://www.288sb.com/home/default.asp?affiliate=365_123456
yes, this link does not save aff ID in cookies, but this link is not Bet365 link.
Our affiliate links look like this link:
http://www.bet365.com/home/default.asp?affiliate=365_004111&lng=14&oty=3&tzi=3
Today tested my Bet365 links and all of them save my aff ID in my cookies.
ebwin, where did you get this link?