I had one break on me a few years back.
We took the whole blind to a blind and shade place.
They did it in a couple of days and the cost, actually I forget but lets say about $30.00.
May have been less can't remember really.
Anyway get them to do it, well worth the price.
That stringing looks like a nightmare with the end result being one shade in the garbage.
07- Classic 2500 LT CC 4x4 SB Duramax/Ally
13-320RLT Crusader TE
Reese 16K Kwik Slide/Prodigy brake contoller