Need help cant figure it out.

[wawa53]

Two years and first real problem I need help with I'm lost have been others.
I have been reusing the same soil for the past two years. All organic no chemicals lots of fresh castings taken when needed from my worm bins. Is this ph lockout? All the others look great its just her. Growth is poor and she just looks like shit.

 

[mysticepipedon]

What's the pH?

Looks like some magnesium is needed, from the top right pic.