AkinaLO- I’ve been through that route (described up thread). You can see all of the comments here and the consistent theme seems to be that the build intuit provided to Amazon is from October 2020 before Big Sur was even released to the public.
I suggest intuit work with Amazon to provide a newer build that you have vetted to be fully functional on Big Sur. It’s a serious gap in the QC that intuit and Amazon need to work out if they’re partners in this:
