two things can happen: 1. the seed was not an auto because of a mix up at the breeder 2. the seed is not an auto because of unstable genetics. Try flipping the light to 12/12 sometimes that works. Sometimes the plant remains unstable throughout and it looks like it goes a bit crazy. that's the worst case scenario because it wont get ripe. hopefully it's not that. Try switching the light up, maybe try adding a shot of blackstrap molasses to trigger flowering sometimes it helps 🚀