Good day, thelma2.

I’ll make sure that you’ll get to the right support who can help you unlodge and amend your BAS in QuickBooks Online.

Right now, unlodging the BAS needs the assistance of our QuickBooks Support. I'd suggest getting in touch with them since they have the facility and be able to unlodge it for you.

To help guide you in amending your BAS in QuickBooks Online, see the following articles below:

How to find the BAS Amendment (GST Exception) Report

Lodging a BAS

Feel free to drop me a reply below if you have any other BAS concerns or anything in QuickBooks. I'd be more than willing to lend you a hand.