Hi Allan.
The network problem is 'general' I get connected, leave the machine and then get a report; not connected to network!! the iMac seems to forget my previous input and says my network isn't available, and yet shows the network in its list, insisting I tell it the Wireless SSID and password, even though I've told it to remember both.
The URL is 'currently' but not exclusively the Mail rewards scheme. https://mailrewardsclub.mailonline.co.uk/WeekendClub
I log in and get the card number entered, but the reward selection is jumbled and I cant select form the various options,
I see you're Stateside so won't know this newspaper URL or very likely be able to log in (without having registered) but I have experienced this problem elswhere, pages not displaying clearly, but overlapping items not allowing readability or where necessary selection of icons.
Cheers