Wordify billing is post-paid: you pay for what your sites actually use, billed once a month. The Billing area shows your running costs and lets you manage everything to do with payment.
Open Billing
Click Billing in the left sidebar. The first tab, Plans & Usage, is your billing home.
What it shows
Month to date: what your sites have cost so far this month.
Projected total: the estimated charge for the full month at the current rate.
A row for each site, with its plan and current cost.
The other tabs cover Invoices, Payment Methods, Credits, Usage History, and your billing Account details.