Peony trouble

Hi all,

I have had this Sarah Bernhardt peony for a few years and it’s been planted in a few different spots without success. Last autumn I planted it in a container, followed all the guidance about ensuring it wasn’t buried too deeply etc., and it has grown loads. I bought a frame and it looked healthy. However, the leaves have started to turn purple on top and the bud has stopped growing. Some of the stems look unhappy. Can anyone recommend what might be best please?

 

To me it still looks planted too deep
That was my problem; so I scraped back about 4 inches of soil to show the crown
plenty flowers this year
I will photograph tomorrow

edit -- mine is Sarah Bernhardt too

 

This is my Peony - note the crown is showing