Thanks for reaching out, @covecleaningservices21.
To narrow down exactly what might be happening, I need a bit more information about the situation.
Do you see an error message when you try to invoice, or does the feature appear unresponsive? Are you unable to save and send your invoice? Any information would help me provide an accurate solution.
In the meantime, you can try accessing QuickBooks Online using a different browser or device. This will help resolve temporary glitches and get you back to invoicing without any interruptions.
For further questions or concerns, please don't hesitate to add them in the comments below.
