Your username is typically your full UWF email address.
Your password is the same as your Argonet password.
Yes, 20 MB. This limit applies only to documents uploaded to the WEPA website, not print jobs sent from an application or printed directly from a kiosk with a USB drive.
24 hours. After that time, the document is deleted from the WEPA system; however, if that happens, you can simply upload your document again.
Nautilus Card, WEPA account, and credit card (surcharge applies). Kiosks do not accept cash.