Mac App Changing Styles

I am using the Mac app and I am unable to change styles. I have ran the terminal command: “defaults delete com.visualpharm.icons8” and it did work to reset my settings. However, how do I change icon styles with the new update?

Hi! Could you please share a screen capture of the app main window?

58%20AM I do not have a sidebar menu available to sort by style of icon. I have uninstalled and reinstalled the application directly from Icons8 as well.

Thank you for the screen capture!
Your sidebar menu is closed, probably. To open it, you just have to place the cursor on the left side of the app window and drag it to the right side.