1. Go to the Settings page and then Main Settings.
2. Choose the Accept Payments tab.
3. Click on Stripe and then on the blue Connect button. 
4. Register your Stripe account, or choose Sign In if you have an existing account.
Congratulations! Your InvoiceBerry account is now connected with Stripe.
5. Tick Stripe box when you create a new invoice that you want to be paid via Stripe.
Note: your clients will receive a direct payment link via email when you send them an invoice.