I believe the kaydoo teenagers
Because you can see him and his buddy sitting on the bike in the video
Just watch the video
Seeing is believing

She try to squeeze
Swipe her card at 7:24
If the bike is claim and is going be checkout
You don’t squeeze in and steal it
Thats what she did
SHE IS A KAREN


Do you know what happened just before the vid? Are you 100% sure they were on the bike and she just squeezed right in between all 5 teenagers and tried to swipe a bike from them? Like the teen's sister says, there are other bikes on the rack...
Now, let your mind think about this... which scenario is believable: Not going to put race on it because I don't want you to have a race bias...
1) 6 month pregnant woman squeezed into middle of 5 teens on the bikes and scanned code to take bike away from them while other bikes are on the dock or
2) bike was unoccupied and woman scanned code to check out bike, teens walks up to her and claimed it's their bikes and starts taping the situation.
Do you need your eyes check, Rock? She's straddling the bike and he's standing to the right of her next to the bike. His other friend is on another bike to the left of her. And at the start of the vid, the light on the bike was on - meaning she checked out the bike. It was only off when they forced it back to docked it.
Look again at the sista's receipts and the white woman's receipts... again, any intelligent person without a bias would see who's wrong and who's right.
You can not just dock a bike and sit on top of it preventing others from using it (in this case he was not even sitting on top of the bike). Now, don't give me this "He might be using it to get back or to go elsewhere like that bearded race hustler white dude. You know why? Because they rechecked the bike and let it sit there for 5-6 minutes and redock it again without going anywhere.
I knew you would base your facts on a short vid ignoring all the evidences presented by the two parties.
Let's take your restaurant for example... if the chair were empty and you set down to order a drink and it arrived (same scenario as her checked out the bike). Then someone comes just second after your drink arrived and starts filming and telling you that's their drink and their seat you just took from them. This is what happened.
You should go read what that teen's mom is saying and asking for funds to help them "because their lives have been turn upside down for her little baby"

I find that funnie because they were the one that posted the vid and tried to make the woman out to be a racist white 'Karen'. But now that the evidences are coming out, thanks to the teen's big sista and these other race hustlers quick to point out the woman's fault with the receipt... it's going against their narrative so they revert back to "oh poorest me, I'm the victim from that racist white woman trying to 'weaponized' her whiteness against my innnocent little baby boy who did nothing wrong"