I too was having problems (see previous posts) but have found the problem in my case.
Even though I have been receiving each digital Issue monthly for almost a year. All of a sudden access was not available. My 10 digit member number was required. And thereby was the problem.
Initially I had entered the NUMBERS which in my case is 8 digits, it worked at first. When I was asked to re-entered the NUMBERS it didn't. So I entered the NUMBERS + the trailing letter. Tilt!! it didn't work.
Eventually I had to put in ALL NUMBERS including the 2 leading zero's and leave the trailing letter off. Hope it helps somebody.
BINGO! it works.
Johnande