The default displacement of the toolbars on the Pages main tab in versions prior to 2.1 was based on the Full HD screen resolution (1920 x 1080 pixels). As the toolbars do not adjust automatically to the changed resolution, on the lower resolutions, some toolbar may appear as hidden, for example Text Styles, Fit etc.
In the standard configuration of the version 2.1 (file Fred4_TabItems.xml) the displacement was changed so that all toolbars will appear normally down to the horizontal resolution of 1280 pixels.
On the lower resolutions, you will need to modify the file Fred4_TabItems.xml and to displace toolbars in more rows.