Dont have permission to access my inbox?

hi there, I was told by someone that they could not send me a PM and when i try to access my inbox, it says i "do not have permission to view this" is there something i have to do in order for me to view my inbox and recieve PM's? i tried re-clocking on my activation link in my email, but still no luck, it just told me that my account was already activated.

any help would be much appreciated

thank you
 
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