Currently Great American Pure Flix has an automated billing system that will attempt to bill again 48 hrs after the original charge didn't go through.
If you have received an email saying "Pure Flix is having trouble processing payment" and you successfully updated your payment information after receiving this email you should see the charge go through within 24 - 48 hrs.
If you have received an email saying your Great American Pure Flix account has been put On Hold you will need to reactivate your membership.