As many have indicated this is one of the STUPIDEST thing to do.
By preventing users to paste password from password managers, you are making everything LESS SAFE. Claiming this is for security is totally moronic! The only thing it does is pushing your paid customers over the edge and buy an alternative to Turbo Tax. The user experience and "so-called guidance" has never been great, but was borderline tolerable. Forcing your users to type complex long password (as they should be, unless you are still using your spouse name and dob as password? lol), and obvioulsy fail a few times, or enter everything by hand. Pathetic software.
