I can see the urgency of knowing where is the Melio payment you sent to your vendor, @ecoincmo.

Since there was no response from Melio support, I recommend directly reaching out to our QuickBooks Online customer care. They have the necessary tools to verify your account in a safe environment. This way, they can check what's causing the delay in the payment and find a fix.

To reach them, here's how:

1. Sign in to your QuickBooks Online company.
2. Select the Help (?) menu.
3. Choose the Assistant tab.
4. Click the Talk to a human option.
5. Select Get help from a human.
6. Click either the Chat with us or Have us call you button.

Let me also share this link to learn how to schedule payments in Online Bill Pay in QuickBooks Online: Understanding payment schedules in Online Bill Pay.

Let me know how it goes after you reach our support team or if you have further concerns about handling Melio payment in QuickBooks. I'll be happy to lend a helping hand.