Journeyman's Compass

The compass won't update even though I am almost done with the entire explorer section.

It updates on entire expansions completed only. You could have everything except 1 zone in each expansion done and it would still be at 0 or 1 or whatever it starts at.

check your explorer achievements to see if you missed anything in an expansion.

So even if I have finished all of the "explorer" I have to finish all of the expansions quests too?

No, its only achievement based. However have you verified you have them? As well, Not all explorer achievements count towards the compass. I don't believe the modern (like TBL+) expansions count towards the compass.

Here is a good list to compare against your /achievement list. Each one will show the specific zones when you click on them.

https://items.eqresource.com/items.php?id=127551

maximizes after 24 expainsions explored, later expansions seem to count now too.
every 4 completed gives 1 Jounneyman Speed AA update (max 6)
look at the explore achiement for each expansion, see whats done. Note some achjievement lists have some zones indented on the list, those arent needed for the achievement, i.e. wedding chapples

Pretty much what Orcen said, you have to complete 4 expansion wide explorers to get 1 rank, with there only being 4 ranks. Any expansion's completed explorer will count to the 24, but there are no benefits past 24 expansions fully explored.