Where are you trying to post? You can't post in threads that are locked and nobody can post in the everything ecigs sub forum as it's content has now been migrated over to the general chat sub forum and locked.
No worries. Any new threads suitable for everything ecigs should be started in general chat from now on. If you visit an existing thread in everything ecigs you will automatically be redirected to the thread's new location in general chat. Replies can still be posted in these threads but the everything ecigs sub forum is earmarked for removal in the upcoming forum revamp. Once it's gone all the threads will still be available in the general chat section.