Can you maybe provide a bit more information... any screenshots? character name? how many knitting balls you have used?
I am sure I have used more than 30 knitting balls, and my sock is stuck at this stage: I also know that I had to use more than 10 to reach this first stage. I tried to "unequip" and "equip" (click on) the sock frame before I used the knitting balls, tried to relog too and I don't know how but eventually the sock "began to have a shape of Christmas Sock". Also, Ive been hunting pigs for hours, and counting the knitting balls myself, and I'm 100% sure Ive used more than 30 now, but it's just stuck at this stage.
From what I can see you have handed in 19 out of 30 knitting balls, can you please keep trying to see if it changes?