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If you have access to add additional Staff, you can set up Two-Factor Authentication at account creation under [Settings] > [System Settings] > Staff.
Logging in From Another Page as a Client
By default, clients log in at /client/login. Blesta makes use of CSRF tokens by default, so logging in directly from another page will not work by default. To get around this restriction it's necessary to edit your config/blesta.php config file to add an exception. Back up, and then open config/blesta.php in a UTF-8 friendly text editor. Look for this line:
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