So your options to play your class are:
1- Stay level 20/30/40 for weeks or months, do your x runs per week, log off and don't play again until next reset in a week
Btw I agree with vendor.
I don't remember entry limit on old retail btw, some people farmed for hours and hours until they almost passed out aka physically possible and sold loot like a machine, spawned Fort Instances where ap gain limit/cap was a stop only if there was one (?) on pve ap. Or was there a limit before GF taking over and restriction patches? Entry scrolls are newer thing and this whole system to force players pay even more.