cant post using sony tab aos

(Had to fire up the desktop to post this)
only this site do i get the message

"you do not have permission to access this page. this could be due to one of several reasons.
1.your user account may not have sufficient privelage…
2. if you are trying to post, the admin may have disabled your acct…

i tried going through opera, dolphin, and maxthon browsers. one of those as well as the browser that is factory installed wont even let me logon. the system tells me thanks for logging in, theres a brief delay. then im logged off/
I can start a thread in marketplace but I cant post in another members thread there
it will let me send and recieve pms
:frowning:

edit: now i cant even post from my desktop!