On the 'All Bills and Deposits' tab of the 'Bill and Income Reminders' screen, please add the account which each reminder will use for the transaction. It would also be handy if you could sort by 'account, too on the the tab.
Please also make account available in the print option too as it appears the only way to export the list of bills and reminders unless I am missing something
Using Quicken R68.32 build 27.1.68.32 on Windows 11