Logged in this week and the entire QB Online application is different...and absolutely unusable.  How do I go back to the old layout?

To be clear, the new screens and layout DO NOT work with dark theme.  Even with sunglasses on, the screens are causing migraines.  The screens are all white, and the fonts are all light grey/blue, which, with a white background, can't be read at all.  None of the screens are "dark" (used to have most of them be black).  And I can't find 75% of the tasks I would normally use (the "New" section is gone (where you'd launch new invoices, new payments, new deposits, etc.)) and I can't see an option to revert to the old style.