It appears you have an online payment from a customer that's currently on hold. This means that we need to review this payment to ensure everything is alright, for everyone concerned in this payment process.
In this situation, we send you an email to let you know how to proceed. I suggest you open your registered email address and look for that specific email. You'll need to follow the steps in that email to clear the payment's hold.
In case you wish to proceed with contacting our Technical Support team for assistance, please take note that we have streamlined our contact process. You can initiate a callback request within QuickBooks Online (QBO), and one of our support representatives will contact you. This is the reason why there's no longer any phone number available for them. View this article for additional information: Contact Payments or Point of Sale Support.
Let me know in the comments section below if you have other questions about online payments in QBO. I'll be sure to get back to you.