So, I am looking to continue from 65 following has this guide ... maybe it has changed and things? I'm not looking for Harlan for a specific quest ... Guide -> https://docs.google.com/document/d/1P_lssf_zPVDJZLKLk9sSucRpSDE_VAWcOF0fUEaciFA/
This is the only thing that I can do for you.

Check your quest log and tell us if you have that purple quest.

Then check your map at Highwatch and tell us if you see that purple dot that I marked in that red square.
Its easier for us to give you some help if you actually provide us with what we asked from you, otherwise this just will be going on circles.

He should be in that location and he will give you some boxes where you will get gear and accesories.
If you have that quest in your quest log and you can see the purple dot on your map or mini map but you can find him in that location when you get there then try changing channels. If you cant find him on any other channel then contact support.
If you dont have that quest in your quest log and you are already level 65 then you probably took the gear from him and you may have forgotten.

These are the rewards you get from him.

Your gear will look something like this.
Note: That guide is out dated, so when you follow the "III. Progression after Level 65" you should ignore point 5 and 7. Point 6 will become now point 5 "Keep leveling till 70". Dont bother to enchant the gear you get from Halran, its a gear that we dont have any sources to enchant it anyway. Aim to get new gear from dungeons drops and their materials to enchant them will be obtained dismantling other gear drops you get from dungeons.
I strongly recommend you to use Discord and join the server for the class your are playing. This way you can get specific info about what you should try to get on gear attributes and other stuff. You can find those discord servers here https://discord.com/invite/6Y2EDS5