Hi Gualy
I wrote down the row below for reference. What you see bolded below in blue are the stitch counts. This is what you should have at the end of the row. Let me know if this helps? Thus in each row or round, after the double hyphen is the stitch count
So in each place you made 3 dc in a ch2-lp, those are the 3-dc groups. You should have that many then for your size of what is in blue. So for example, if you are doing the smallest size, you will ch2-lp in next ch2-lp, work 3 dc in next ch2-lp, all the way around. After you join, the smallest size will have 14 ch2-lps, and 14 groups of those 3-dc made together.
Rnd 1: Ch 1, ch2-lp in same ch2-lp, 3 dc in next ch2-lp, *ch2-lp in next ch2-lp, 3 dc in next ch2-lp, rep from * around, join with sl st to first sc, do not turn––14 (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 27, 28) ch2-lps, 14 (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 27, 28) 3-dc groups
As for the band rows, those will be different depending on what size you are doing