If you are a G Suite user, you'll want to connect your KiSSFLOW account to to G Suite account. This will let you take advantage of features like User Sync and Single Sign-On. 

To do this, you need to be an admin for your G Suite account. Start by navigating to the Apps section, and clicking on the Marketplace apps card. 

Search for KiSSFLOW in the dialog box and install it from the G Suite Marketplace. 

KiSSFLOW will ask for a few permissions to access your account. You will also be asked a few questions to help customize your account.