Wi-Fi up sell option offers customers to use free Wi-Fi for set amount of time. During that time, they receive an email reminding them that their free Wi-Fi is about to expire and offering them a chance to upgrade to a paid package.

To set this option up, you need to have payment option turned on in your splash page. There also need to be a Free Wi-Fi package available under packages. Simplest way to check if that package is available is to check what options appear when you look into your splash page.

After you make sure that payment is set in the splash page, head over to Packages and edit the free package.

If you don't have a free package set up yet, create one by selecting the + Add Trail Package option (Located on the opposite side of + Add Package option if there already isn't a free package available)

From there, turn on the Send up sell email, and set the amount of minutes, to whatever feels suitable to you.

Once you've set up everything correctly, you can test out this method.

Simply go back to Splash page and select the Demo option.

Select the Free Wi-Fi option and enter your email address.

Since this option is creating a free account for the user, a password will also be needed. So enter that as well.

You should be redirected to whatever website is set in your setting of your site (default is google.com).

After a few minutes, an email like this should appear in your inbox.

If the user selects the Extend My Package option, he is then redirected to a new splash page, which requires him to select one of the available paid packages.

From there, payments are done like with any other paid Wi-Fi option. And the selected package is added to the account that was used to log in to free Wi-Fi earlier.