Hello there, @FU5.
Thanks for posting here in the Community. I'm here to help share some details about disabling the login process when paying an invoice.
I've tried sending an invoice on my end and it's not letting me log in to my account. In this case, I'd suggest reaching out to our Merchant Services Team. This team is the best resource for such inquiries for they'll be able to discuss with you about your account's verification and provide the option to disable the login page.
To reach them, please refer to the contact details found in this link: QuickBooks Payments.
Also, for more details about processing payments and sending invoices in QuickBooks Online, please visit these articles for your future reference:
This should get you moving today.
Feel free to reach back out to me if you have any other questions concerning sending/paying invoices in QuickBooks Online. I'll be around to help. Have a great weekend!
