"Available Funds" needs to fully cover the cost of the prepaid plan. If it's not enough then it won't renew.
Payment vouchers sometimes take a few minutes to process. "Available Funds" can report the wrong balance (with or without the payment voucher included in the total) for a few minutes.
The plan should automatically reactivate within minutes after payment is accepted. There should also be a "Reactivate Plan" button somewhere near the expired plan status that you can click on, if needed.
You'll also receive a "Public Mobile here..." text notification thanking your for renewing your plan.
Be patient and let the Telus servers do their things. It's one of those problems which usually sorts itself out after a short while. If you keep banging on Self-Serve before it's finished then it's more likely to take longer or break something.
Public Mobile applies no penalties or fees when you miss payments, your plan is deactivated/suspended/expired, or your plan is reactivated afterwards. It's strictly prepaid with no contractual obligation to renew. Many of us have intentionally allowed our plans to lapse while not using them during vacations/etc.
Although you may miss any Rewards/Points issued when your plan wasn't active.
