ive purchased a star upgrade yesterday 1100 fg and i did not get it yet. can it take longer then 24 hours????

If you used the Donate for me section to purchase a star upgrade, I believe it's a minimum of 72 hours.

These star upgrades will now be reviewed and processed after 24 hours, instead of after 72 hours. This greatly speeds up the turn-around time of both receiving your star upgrade if you are putting your FG in, and getting that FG if you are the one paying for the star upgrade for the other user.

taken form here - http://forums.d2jsp.org/topic.php?t=71291037