I should've said yes on "someone else can claim me as a dependent on their tax return"

Hello,

 

Both my parent and I did tax return for 2020. My parent added me as a dependent under their name but when I did the tax return separately I said no on "someone else can claim me as a dependent on their tax return". I used free turbotax edition cuz I make very little money and my parent paid for turbotax. My parent's tax return was rejected because of my mistake. I want to amend my mistake but I can't amend my tax return online. How can I fix that? 

 

@SusanY1