What to do when a browser page loaded from a Mac app won’t work

Many websites that offer financial services (such as banks and investing companies) let you connect your accounts to other software, such as Quicken. However, it’s often unwise to let any third party see your login credentials. The workaround is that you can start at the app, which switches to a browser in which you log in directly to the site in question and authorize the conduit, and then the site provides a token directly to your app to allow

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