2 or 3 days late is a bit soon to be panicing about a payment, at some point every affiliate program pays late well 99.9% of them anyway.
I don’t have anything to do with affutd because of bad experiences with tracking, payments and yes broken promises. This isn’t saying it will happen to you as well, maybe you should phone them and ask for a genuine answer and relaistic date.
Heres some other william hill news thats not good for their reputation. http://www.ukpokerplayer.co.uk/blackpool-club-poker-and-casino-vanish