Your Doorkeep subscription is billed through Stripe. The account owner can see the current plan and this month's usage any time under Settings → Account.
Where to find your plan
Go to Settings → Account. The Subscription Plan section shows:
Your current plan name.
Team members: every plan includes unlimited team members, so you can invite your whole office at no extra per-seat cost.
A Customer Portal button (account owners only) for payment and billing changes.
Below it, the usage section shows this month's call minutes and when they reset. The Usage tab in Settings lists past months and anything charged for minutes over your allowance. See Included minutes and overage charges.
Monthly and annual billing
You choose a monthly or annual billing cycle when you sign up. Annual billing is paid once for the year; monthly renews each month on the date you started.
Seeing what you're paying
For the current price of each plan, see Doorkeep plans and pricing. Your exact charges, invoices, and receipts live in the Stripe Customer Portal. Open it from Settings → Account.
What to expect
Only the account owner can view and change billing. Other team members see the account name and owner, read-only.
Billing emails go to the billing email on your account.