After upgrade from J4 to J5 I lost the icons in the menu bar. I am not a dev just admin so can someone explain in simple terms how to restore these icons TIA

web site: https://asadevelopment.net/services how it looks in J5

how it looks in J4 https://www.joomshaper.com/joomla-templates/fusion

You will see the little down pointing arrows are now empty boxes