in act 5 i cannot get the hire button why
https://classic.battle.net/diablo2exp/basics/hirelings.shtml
Act V Hirelings: Barbarians
The Hirelings of Act V are available from Qual-Kehk in Harrogath once you have finished his quest.
https://classic.battle.net/diablo2exp/quests/act5.shtml
Rescue on Mount Arreat
Since the siege has ended, Qual-Kehk has turned his concern toward his men still imprisoned among the demons. The gods only know what’s being done with them. In your journey up the mountain keep your eyes open for Qual-Kehk’s soldiers and bring them back to him if you can.
Given by Qual-Kehk after defeating Shenk the Overseer, or by entering the Frigid Highlands.
Tip: Search the many fortress areas for special areas on the Automap. They will appear in white. Knock the doors down to release the Barbarians. It is possible to fail this quest. If it says unable to complete quest, you have failed. Create a new game and try again.
Do the second quest act 5 m8, free the barbarians in frigid highlands