Not getting una points on alt?

After reset today, I did 3 una tasks on 4 toons, but I only got 18 points instead of 24.
I have 2 T3, 1 T2, 1 T1.

Is there some hidden limit or something ?

Thanks

The limit isn’t hidden. It tells you that you can only gain 18 in a day.

you can obtain points for 9 unas dailies each day, 2 points per quest = 18 total points. this information is show directly under where the points are shown