A token is saved automatically the first time a client pays through Viva.com. You can view saved
tokens and trigger a charge on demand.
The plugin's admin page lists every Viva.com Saved Payment Method (client, currency, masked
card, date added). Next to each is a Bill action.
Bill opens a per-currency summary of the client's open invoices and their amount due; Charge
now charges the saved token immediately — useful when you don't want to wait for the nightly cron.
Clients see their own saved methods and can Remove one. Removing a card stops auto-renewal in
that currency until they pay again.
The stored token is Viva's recurring transaction reference, not card data — card numbers never touch
your server.