If you encrypt 'APPLE' with vignere using the key 'KEYKE' the result should be 'KTNVI'. If you encrypt it with key 'KEWEE' the result is 'KTLPI'. * And I still can't figure out the password. *
Apparently, to make things happen, you have to click on the fields a few times or hold the left mouse button on them for a bit or just hover the mouse over it for a bit.