1. I heard the reputation of icc because of many title players online, right now i am premium member on trial, later when i become a free member then if i gather rating 1900+ in blitz then can i see challenges of title players and also create challenges to them to play with them ??

2.Is being premium member is all i need to gain something from here ? is being a premium member is a must here in icc?

Hi!
If your rating is high enough, you can get paired with titled players in the pools (3-minute, 5-minute, 15-minute). Also, there are several occasions to play a titled player in ICC. ICC has GMs, IMs and FMs giving events such as simuls and blitz, where they plays against ICC members no matter their rating.

hi after trial expired, will my login remain? or it will be invalidated too?. If it remains then can i see those game challenges as before and play for higher rating on the desire of playing title players later?