Quote Originally Posted by Ahnog View Post
Completed all those dungeons and ilevel 510 gear
The game disagrees with you.

Take a look at the individual duty finder entries for each of those dungeons and see which one does not have a green check mark in the top right corner of its banner image. If you're current on the story, there are only two possibilities, as three of those dungeons are MSQ dungeons. Also make sure you're not confusing Akadaemia Anyder with Anamnesis Anyder.