Having the same problem logging in using Chrome from a Windows 7 laptop. Keep getting the "incorrect email or password" error. No problems from my phone, nor from my newer laptop.
OK, since the Pandora bot doesn't seem to want to have public discussion on a password issue (which this likely isn't if you can log in from another device). Here is the link to the help page for Chrome. Probably can do something similar to resolve the issue if it occurs on another browser.
Short answer for what worked for me is delete the browser history.
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