Hi. I accidentally wrote my email in the place of my educational supervisor's email. Can I somehow rectify this error or am I already disqualified?

Suddenly Apple's website says that the deadline is April 19th. Is it some weird error appearing only for me or has the deadline actually changed? Thanks in advance. :)

Hi. The prose feature on swift playgrounds currently doesn't seem to be working right now. Does anyone know how to fix this issue? When switching to another playground page, the prose that was once in another page disappears, and sometimes an error message called "Updated content has 2 editable ranges but original has 1 editable ranges." pops out. Thanks in advance. P.S. It seems I am not the only one experiencing issue. https://stackoverflow.com/questions/66902571/swift-playground-prose-gone-when-changing-file

For the WWDC21 submission, may I put the contact of my homeroom teacher in the educational supervisor section? I can't really connect with the principal that easily because of covid and whatnot, so I would like to provide the contact of my homeroom teacher, but the requirement says that the contact of the principal, dean or the equivalent is needed. What should I do?