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I'll share some information so you'll be able to accept online payments in QuickBooks Online.
If you have QuickBooks Payments, you can accept electronic payments such as credit cards and ACH transactions from an invoice or email. You'll have to turn on the online payment feature to allow your customers to pay their invoices online.
Go to Settings ⚙.
Click Account and settings, then select the Sales tab.
Under Invoice payments, select the pencil icon ✎ and mark the checkbox for the payment options you want.