Your friends probably just started new accounts and that's why you can't find their games. Yes it is against the rules. Your games form a permanent record and so far as I know there is no way to delete them. I'm wrong a lot though. 
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Well, Those ID's are Older than 1 year ...
Oh my bad. What was I thinking? Basic members don't have much access to stats; that's why you can't see their games. I did a paste for you, but you might want to check yourself since there is a nice explanation of performance stats I couldn't copy. Home>membership
| Diamond | Platinum | Gold | |
|---|---|---|---|
 Video Lessons |
Unlimited | — | — |
 Chess Mentor Online Training |
Unlimited | 5 lessons /day | 3 lessons /day |
 Computer Analysis of Games |
Unlimited | 25 /week | — |
 Chess.com TV - Live Shows |
Unlimited | Unlimited | — |
 Openings & Game Explorer |
Unlimited | Unlimited | — |
 Tactics Trainer |
Unlimited | Unlimited | 25 /day |
 Live Tournaments |
Unlimited | Unlimited | 3 /day |
|
Turn-Based Tournaments |
Unlimited | Unlimited | 10 /time |
 Performance Stats |
Full (all members) | Full (all members) | Self Only |
P
But I m confused That, I am also a basic Member with No Memberships and My Friends too, But they can check my games But I can't :(
Well the chart shows how it is supposed to work; why your standard friends have access to premium features, I have no idea. I guess you could be a meanie and rat them out, but if it's some random bug, chess.com might not be able to find it either.
Aug 17, 2015
0
#7
What is probably happening is that your friends don't have recent games and you do. Archives are available for the past 30 days for basic members.
https://support.chess.com/customer/portal/articles/1444929-why-can-t-i-see-all-of-my-games-history-
I could be wrong too but I think basic members can see up to the past 30 days of any archive, including their own.
Hi There , I just want to know How can I delete or Hide The Games Which are Completed.... Whenever I try a new opening, My Friends prepare for it. By checking my recently Completed Games and when I do Something like That , It shows me ,No Games Completed , means That their is an option Or Something like that, Thanks For Your Support , Waiting for a quick response :)