INFO SPEC error

hi there!
I use 16 tables in this app, and here where I could see the relationships between them only 4 appear …

Please could you review?
I send photos …
thx!

Did you try move the screen to make sure they aren’t just showing up off screen someplace because they aren’t connected? If you click anywhere that is white and drag and move around you might find you have tables that landed off screen?