It looks better than mine :|. Then again, I did use an AP flower blend for a more sandwich bread-like texture.
Discussion
Your bread looks perfect to me, I bet it was yummie. Mine is a little denser, not so fluffy likely due to the high whole wheat content. I'll start today to convert my starter again to BF instead WW. Pretty sure somewhere on my profile I've got more bread pics from before I killed the starter.
The bran in whole wheat usually sucks up a ton of water. If, say, you do 65 percent hydration normally, bump it up 5 percent. That usually works for me. If you go by volume, just add a tablespoon of extra water at a time and mix. Keep doing that until it feels more soft but holds its shake. Your starter should be fine, though. I use a 60 percent hydration stiff starter that starts out as hard dough. It's more active in yeast and tastes better to me. Although, you have to alter hydration calculations and use more water.