Citadels with no beam

Hello!

Been looking for citadels at my atlas and was really confused, since there was no beam to be found anywhere...

Found one citadel by luck i guess, just clearing the atlas around but without beam (so had no clue it was there).

Any chance to fix my atlas problem? I just wanna see it!!

If i cant see citadel's beam how can i find em/farm em?

Could see 3 citadels at the start of my atlas, so cleared those, haven't seen any other citadels since :(