Achivment Points

Hello everyone! All together I have 2.4k achivment points but on webiste it says that i have 1.7k? I really don't know what is this and it makes me a bit angry because I maybe could get more points but it's saying wrong. Any help would be appreciated! Thank you!

only unique achievements count (ie 3x 'level 80' and 2x 'stormwind stockade' only count once each)

Oh I see :/ That's why I don't get as much.. Bummer. Thank you for clearing that out