My account is not allowing me to add an invoice? Why could this be?

I appreciate you posting here in the Community, dash.distributor.

I'll add some troubleshooting steps so you can add invoices directly from your customer.

QuickBooks Online allows users to create customer invoices under the Customers tab. However, since it's unavailable on your end, I recommend utilizing a private browser. This will help rule out possible webpage issues and avoid discrepancies related to your browser's cache that might be corrupted.

You can refer to these keyboard shortcuts:

• Google Chrome: Ctrl + Shift + N
• Safari 11 or newer: ⌘ + Shift + N
• Mozilla Firefox: Shift + Ctrl + P
• Microsoft Edge: Ctrl + Shift + N

Once it works, proceed to your regular browser and clear its cache to refresh your website's preferences. Also, note the system's supported browser for the best and most secure experience.

After that, let's create an invoice again directly from your customer. You can locate the option from the list of your customers or from the customer's profile. Refer to this image below for more details:

On the other hand, consider scanning this material for a guide when you're ready to record customer payments: Record invoice payments in QuickBooks Online.

You can always visit this forum for additional queries about customer invoices or other QuickBooks Online-related concerns. We're here to lend a hand.