Constant sinus infections after septoplasty. What's wrong?

Very difficult to answer your question without examining you and seeing a Cat Scan of your sinuses as they are now.  You may have scar tissue from your last surgery blocking your sinus cavities .  If the surgery doesn't heal properly it is possible to have even more symptoms now than before surgery. This is usually easily corrected by revision sinus surgery .  I do a lot of these and using Navigational image guided techniques is the standard of care as I demonstrate below in the video made in my in office sinus surgery center.