Groove Coaster EX first-time play

Seems that Level 8 and above is already that difficult for me when I tried this game for the first time. Luckily at that time, there weren't so much people playing those games non-stop at the Bugis Virtualand arcade. Unfortunately, the coin mechanical problem is bound to be targeting the left Groove Coaster machine this time while the LCD Beatmania IIDX machine has the fixed coin mechanism. Perhaps, they repaired it according to some complaints from the players. However, what did they not fix though was the network connection for that machine and the router there was getting lazy or something and it TOOK A LONG FUCKING SWEET TIME TO SAVE MY GOD-DAMN NESICA DATA after finishing my first-play.