Find the POIs
Not sure what is happening to you. I can only advise that you look again at every map completion tooltip while standing elsewhere than in Lion Arch (because it is often in overflow and I have often witnessed tooltip issues there. Also, you might find a tip by looking at your explorer achievements. If you have the explorer achievement for a region, it’s likely your missing POI are not there (not impossible though).
Many people have claimed to checked it thouroughly, but found out later they really didnt have all. Best advise is to print this list on paper, check every map, end then checkmark them with a pen. This makes sure you dont make false assumptions or just forget to check an area
- City’s -
Rata Sum
Black Citadel
Divinity’s Reach
Hoelbrak
The Grove
Lion’s Arch
- PvE-explorable area -
Plains of Ashford
Queensdale
Caledon Forest
Metrica Province
Wayfarer Foothills
Diessa Plateau
Kessex Hills
Brisban Wildlands
Snowden Drifts
Gendarran Fields
Lornar’s Pass
Fields of Ruin
Harathi Hinterlands
Blazeridge Steppes
Dredgehaunt Cliffs
Bloodtide Coast
Iron Marches
Timberline Falls
Sparkfly Fen
Fireheart Rise
Mount Maelstrom
Straits of Devastation
Frostgorge Sound
Malchor’s Leap
Cursed Shore
Chantry of Secrets
Claw Island
- WvW-maps -
((Blue World)) Borderlands
((Green World)) Borderlands
((Red World)) Borderlands
Eternal Battlegrounds
Arise, opressed of Tyria!
My guess is the 2 POIs added to Southsun after the settlers moved there.
As far as I know, POIs in Shouthsun do not count for map completion, did that change with the last update?
As far as I know, POIs in Shouthsun do not count for map completion, did that change with the last update?
Nope it didn’t. Southsun cove is the only map you dont need to explore. You dont even get a reward for it.
Arise, opressed of Tyria!
Well in theory you should be able to open the map in any zone you are in and if it’s not 100, they are there. 
Or, open your map and slide it around and compare to something like this?