Back out after light duty

I had been back to work for a couple of months on light duty after being out for a year due to my work related injury. Work was not following my work restrictions and my symptoms because much worse and my provider put me back at no capacity. Work says they were following my restrictions and workers comp is saying they won’t pay now. Both of my doctors had me describe the work tasks that were asked of me and agree they were not compliant with their written instructions.

How would I appeal the no payment while I am out again?