Plants too compact??

Might have been a bit to close to the light in week 1 if it was at 100% but I think your main problem on why they are stunted is because you transplanted an autoflower. They do not like their roots disturbed in the slightest. They then went into flower shortly after. I have seen this type of issue in my grows before and now I try and never transplant autos, I grow them in there final pot, normally a 3gal. On your next grow try this and I bet you will grow much larger plants. One other point I think that will also help you is using 1/2 to 1/4 strength nutrients or monitoring the PPM/EC of the solution your feeding them, can do this with a TDS Pen. Autos dislike heavy feeding can cause them to go into flower early on as well. https://www.autoflower.net/forums/threads/med-man-method-feeding-chart-ppm-ec.47856/ great refrence point for ec levels. Good Luck! ***disclaimer, multiple people are answering all questions as there is a contest called GOTM, when a user is selected as the answer they get a point. Please see the contest page for information regarding the details: growdiaries.com/giveaways/GotM-August-2022 Please note, when you reply to anything on the questions part of Growdiaries website, no one will be notified of this. Not even if you use a "@" tag in their name. Best to reach out to them in DM using your inbox, it can be found in the bottom right hand corner of the site. It's the small paper airplane button, it will be highlighted green if you have new messages***