Yeah, uploads are locked during the rating period.
Since itch’s interface is a little weird (and Calvin Ball is separate run from One Eyed Lumberjacks), I recommend actually uploading Calvin Ball as a separate submission. It’s easier for me to allow “late” submissions than it is to let people edit their submission.
Go ahead and make a separate project page for Calvin Ball. Once you do, post the link here and give me your email. I’ll then generate a unique submission link for you and email it to you. Sound good?