Denial of lounge entry can be just plain ill trained lounge agents. If you pop over to the Flying Blue board, FB Plats who have a combined FB/Amex Platinum card have been denied entry to President's Club because the card was not on the chart.

Perhaps yoiu're Lifetime Platinum card was accidently left off the picture of cards sent out to other SkyTeam Carriers....

I think its just terrible how they are trained to loook at a chart.

Training should be...

SkyTem Elite Plus on International ITN (if you include Canada is beyond me - last trip to Canada, they let me in after some reasoning), International Business or Internation First Cabin, or Memebership Card = Lounge Access

None of this "if the card looks like this" BS.

-Vincent