Damping offf?

I had a similar issue in past and what I did is put the plant into a new pot with new soil and put the plant in 24h dark to recover. Make sure that the temperature and night don't go below 66f and before the next watering check that the soil is dry on the top if not don't water till it get dry. Also try to increase your temperature to 75f at day time as in seeding stage the plant like more hot temp than 71f. Good luck and happy growing I hope she will be fine 👊👍😀

She just has a weak stem. I always put a fan on low blowing on my seedling. I keep the fan a couple feet away. You can always just put some more medium in the pot. Best of luck with her.

It definitely has the pinched stem, You could try lifting it in low light wash plant stem and root in a peroxide solution (pipette), then re-pot almost up to the cots in fresh peroxide soaked coco. If you do this you must be like a surgeon handling the seedling and back filling with medium. You are gambling here hoping the seedling has time to root out above the pinch. If it survives there is always a danger the infection has become systemic, you may not see it again until the plant hits senescence and weakens, when it will appear in your plant as a bud/stem rot. As I say it's a gamble. No matter what, you know there is an infection of some sort, Bacteria/Fungal in that pot Peroxide flush the pot at least to stop it spreading it only takes one gnat to infect every pot in a domino effect.

It may just be stretching a bit if your light isn't close enough. Either way, the only thing you can do about damping off is let the soil dry and try not to overwater.

I see ahealthy looking seedling...... my onyl tip would be like, loose the leashes, give her airflow, shake her alittle between your finger, so the stem strengthens she dont need that leash, hemp is strong and resiliant. if you afraid of beein to long dig some soil around her

It goes back to green at the bottom though so idk