I found out that the pattern is wrong and it should say to CO 4 sts only at the beg of the row, not the end also. I got on ravelry and messaged someone who had knit the shrug and she replied with the errata…
Ginny
Disregard previous about casting on sts
Ahhh, I didn’t see errata. I was using a much larger needle anyway, so after the first 2 COs used a different number for the rest of them.