@meganann1105 It sounds like youre on the $50 plan. You bought a $50 voucher.
Your next option would be to add $1 to your account to kick start your renewal to work but this is difficult if you don't have a credit card on file. Unless you have a friend with a card willing to do this one time for you. Otherwise it sounds like your renewal failed and you need a moderator to fix it.
If you did not load your voucher on your account do so. Reactivate. Reboot phone. Services should resume.
If all your services are working. Ignore the message it's been sent out in error. It happens sometimes.