To log in as invisible on Tempted, go to www.tempted.com and click the Log in button in the upper right corner. Enter your email and password as usual. Before logging in, check the Log in as invisible option to manage your Profile without appearing online.
To change your Profile status and appear online, simply access your Profile and click on the gray dot next to your Profile Picture. Then, select the Online option. You can update your status at any time.