Hi there, @ SpaceWoman.

As of now, changing the default browser isn't possible. QuickBooks recommends using Internet Explorer (IE) when downloading bank transactions.

If your bank doesn't support IE, you have the option to bring the transactions manually. 

Here's how:

1. From the QuickBooks File menu, select Utilities.
2. Choose Import and then Web Connect Files.
3. Select the QBO file you saved, then select Open.
4. When prompted to Select Bank Account, select:

• • Use an existing QuickBooks account if the account you are importing the transactions into is already set up in QuickBooks.
  • Create a new QuickBooks account if the account you are importing the transactions into is not yet in QuickBooks. Type a name.

1. Select Continue. You should see a dialogue box telling you that the data has been successfully read into QuickBooks. Click on OK.
2. Go to the Bank Feeds Center to review your transactions.

For your reference about the process, I suggest checking this article: Import Web Connect (.qbo) Files.

Once you downloaded your bank transactions, review and categorize them to ensure your books are accurate.

If I can be of any additional assistance, please don't hesitate to share your concerns or questions.