First screen contains shortcuts to the other screens. The exlamation mark shows that theres an app with a notification. So, first screen’s exlamation mark shows that there’s an app with a notification on the second screen. Which in this case is Whatsapp.
Not happy yet with all the icons, but I don’t have access to my computer. The white line at the bottom is Chargebar. All done with UCCW and Missed It!