Welcome to the Community, @EQELECTRICAL. Since the invoices are taking too long to upload, try uploading them one at a time and make sure they are in the correct format.
If you still can't upload even after doing the above suggestion, consider refreshing the page or logging out and then logging back in, as this often resolves the problem. Also, use a supported browser for the best experience.
For tips on improving QuickBooks performance, check out this article: Why is my QuickBooks slow?
Should you have any other questions or concerns, please feel free to leave a message in this thread.
