Is there something going on with my account?

I have a premium account.
I'm not able to pm or reply to some posts. Yet I'm able to reply to others.
Site glitch? Cause one of people I tried to reply to was first time I ever spoke to them so, I don't think I was blocked

Which forum or threads are you not able to reply to?

Mobile AL Sarah Bella, can't reply or pm. Kiki 2012 can't reply. Tattooed Barbi can reply
Cassie 107 can't but can pm
Wierd

You can’t post a reply in the Weekly or Weekend Updates sections to respond to the provider’s post.

You should be able to post anywhere else though.

Sometimes Sarah Bella has a full mailbox

Thanks brother