Ups there is a bug in the Spanish (the league i was playing) and Portugese leagues. The squad numbers that you submit to the league board are reseted after each match. You can set the numbers again after each match, but the problem is that once the official time frame to submit the player numbers is over, the players not registered can't play the official competitions. I have read at the SIgames forum that it's going to be fixed in the next patch so i guess i'll need to wait for it before playing.
About the German league real teams names and competitions names, there is an unnoficial patch that fixes it, it can be found here:
http://www.sortitoutsi.net/index.php...s&news_id=1731
Download the real competition names.
You can find also more usefull stuff on that website too.