HI, I've seen a few older posts for this problem, but not a solution that works.
I'm trying to update a map for my in-dash Garmin device. I can launch Garmin Express with no proble, it tells me there is a map update available, but when I try to buy, and it asks me to log in, it just reverts to the same screen, with the "Buy" button. I've reinstalled GarminExpress, and removed and re=added my device, but no joy. Any other suggestions?