In early January Google began penalizing websites that use popups on the mobile versions of their websites. As always, Google’s primary goal is to create the best user experience possible. Google recognizes that popups are intrusive for users, and ultimately delay the user from reaching the desired content. In short, popups provide a poor user experience.
The best advice is to remove any popups that you display on your website, to not display when your site is viewed on a mobile device.
Examples of popups that make content less accessible to a user:
Let us know if you need any help reorganizing your site to eliminate the user of popups!