Same here for today's u21-game (germany-france) for me as well. It was about 9.45 - 10.15 am that I tried to save a new (improved) lineup. I had already set a lineup last week to prevent risking a walkover. But I had some ideas as to how the lineup could be improved. It seems, there's something wrong and I hope it'll get fixed very soon. It's rather annoying.
(by the way, I didn't have time to try later on if a lineup could be saved ... it's just annoying when you're thinking and trying to find a lineup for about half an hour and then it's just for nothing ...)
Du hast nicht genug Geld, um dieses Gebot abzugeben!