Hello, czappile. Welcome to the Community.
I can help you with turning on the payment option on invoices. Here's how:
1. In the top menu bar, click on Edit and then Preferences.
2. Go to Payments, then Company Preferences.
3. Look for the Online Payments section, then choose how you want your customers to pay (Card/Bank).
4. Save your changes by pressing Ok, then Apply to existing customers.
It's that easy! I'll be here to answer any questions that may arise, so just let me know if you need me.