Hi
I can't send message on Facebook,I can't post on Facebook,and I can't add my friends.

Can you get onto your Profile or your Home page and read anything?

Yes I can

But I cann't share anything or request for friends or like something...

but i cann't share anything or request for friends or like something ...
Did you check your account information? Is anything temporarily blocked? Can you trust someone who knows FB and give that person your password, so that he or she can check, or show them once you are in FB? Maybe they will see something you are missing.

I'll to to my FB page now to check for any possibilities.

Completely clear your cache and turn OFF any popup blockers you maybe using.

Have you installed anything recently ?

To curlyben:no I did not installed recently

To wondergirl:yeah,I checked my accont information, I set all situation for everyone,
I don't know what is my problem on FB.

To wondergilr:please send me correct account information if it is possible for you.

To wonder gilr and culyben: please send me correct account information if it is possible for you.

To wonder gilr and curlyben: please send me correct account information if it is possible for you.

It's NOT possible for us to send you any account information as we do NOT work for Facebook.

Have you completely cleared your cache?