The Striking Back quests are both daily and level restricted.

https://tbc.wowhead.com/quest=11917/striking-back (16-28)
https://tbc.wowhead.com/quest=11947/striking-back (29-38)
https://tbc.wowhead.com/quest=11948/striking-back (39-48)
https://tbc.wowhead.com/quest=11952/striking-back (49-55)
https://tbc.wowhead.com/quest=11953/striking-back (56-63)
https://tbc.wowhead.com/quest=11954/striking-back (64-70)

Version 6.5.1

We currently don't have 'maxlevel' implemented in Questie.
We need to rework 'repeatable' system to work better with dailies.
We had to make them not repeatable as a quick fix so they wouldn't reappear when you turn them in, like dailies.