I can not recreate what is happing to you.

You say that the contestant data is getting stored in the database then there is no reason that you should get these errors displayed.

Try this test.

1. Enter a name in the name field only submit the form.

Did it add a contestant record to the database?

If NO

2. Enter a name in the name field and a valid email in the email field. submit the form.

Did it add a contestant record to the database?

If NO

3. Fill out the whole form and submit the form.

Did it add a record to the database?

1st. Did it add a contestant record to the database? No it didn't add the information to the database

2nd. Did it add a contestant record to the database? Yes it added the information to the database, but I still received this error at the top of the contestant page, and I only see 6 entries but I can't see the contestant name & information now

Error: Your name must not be empty.
Error: Your e-mail address must be a valid e-mail address.

3rd. 3. Fill out the whole form and submit the form? Yes it added the information to the database, but I still received this error at the top of the contestant page, and I only see 6 entries but I can't see the contestant name & information now
Error: Your name must not be empty.
Error: Your e-mail address must be a valid e-mail address.

So I don't know what happened now!