Invisalign gap between teeth and tray. Any suggestions? (photos)

I change my aligners every week. I'm on week 6/60. When I put in #6, there was a noticeable gap between my teeth and the tray. I used chewies, and wore it for a day. I'm out of town, and called my ortho, who is unavailable. His assistant told me to go back to #5, but now that same problem is on #5 too. That wasn't there next week. I'm unsure what I should do, nobody is available and I won't be able to see my ortho before next Thursday. Should I stay on #5 or #6? (#7 also has same problem).