says maxed out but can still upgrade – Post Office: Idle Game Review

for the night time thing and the level up. it says i reached the max level (when i got to 50%) but it still gives me the option to upgrade (though idk what i’m upgrading to) also. there aren’t enough boxes even though my belt speed is super fast. how can i get more boxes. i also agree there should be a prestige.
Review by lexx1761198 on Post Office: Idle Game.