It can't get worse - today they reduced my rating to 89% and took away my Top Rated Badge. It is really stupid to have such a blind rating system - I now think that upwork has this system to settle scores with freelancers that don't give them good feedback.
I recently closed contracts where client didn't respond even after several email reminders over several months - why should I be responsbile for poor communication of clients. One of my clients closed a contract with five star feedback and still they took away my badge.
Your star rating for each job and overall star rating are displayed on your public profile. It is still very important, however Job Success score presents a fuller picture of freelancer's performance on the platform as it includes contracts where no money was paid and no feedback left.
This job success rating seems like a big scam. I have never received a feedback less than five star and still my job success rate has come down to 89% from 100% in past 3-4 months. The odesk is not even telling me what jobs were unsuccessful. If a client doesn't leave feedback or doesn't communicate after job is completed - that's not my fault.
Mine's just gone from 100% to 96% after two 5* contracts from the same client ended, with nothing else having ended since January. I can only assume the client's private feedback differs from their public, but why they would want to publically praise and privately slam me, I don't know. I think it might be like others have suggested on other threads - clients don't always seem to realise the impact of their ratings, and some of them will do things like suggest they wouldn't hire a freelancer again because it's a one off project, rather than because of the quality of the work. It's a flawed system at best.
good luck with asserting your right there. If you have a day or two without work, search back at the numerous, myriad forum threads on this very subject. The Dark Score is here to stay and will always be kept as a dark Score. It's been suggested that whoever wrote the algorithm died and took the code with them.
I'm already unfortunately all too aware of the futility of it... I don't know how many more times I can be read the Job Success Score guidelines by the support staff as a response to my queries explicitly challenging said guidelines...