How to upgrade star rarity

[R2303170162]

My hero is stuck at level 30, how to get new star
Tried ranking him but it kinda looks like a different path

[John Evans Senior]

its wrong , they lvl star enhancing the mercenary and not promoting him , u need to enhance mercenary to lvl 5 to increase his star , which allows you to go to lvl 40 , then i guess its enhancing to lvl 10 to get to lvl 50

[MemoryLane]

Mercenaries can only level up so far before the star rank needs to be increased. Star ranking is done through the Promotion tab.

[R257615625]

what they are saying is their hero is lvl 30. if you click upgrade (it normally uses eperience scrolls) it now says "Please upgrade your hero star" instead of using scrolls. I know i had one, but im not sure how i got it.

[MemoryLane]

Can you provide a screenshot of what you're stuck on?