Problem Conncting wordpress.com

i know this has been posted on other forums but none of the other threads have answer to my question

1) problem : wordpress.com is not connecting on few of my sites and i can’t install plugins from repository and can’t connect to jet pack which is must! this is happening on sagarchaudhary.com tips.geetaistudio.com geetaistudio.com developers.techweed.in techweed.in (from the same hosting provider speedhost.in linux) while installation on nexgenbroadband.in is working fine with wordpress connection which is from a different provider (microhosting.com windows).

i’ve tried almost everything, if you guys have any solution, plz help me