Hello.
OS Passive Fingerprint
The fingerprint to which the browser can not affect
the data comes from the proxy server
it means that it's compares os proxy and os in the config
1var. use Linux configs (98% proxies on Linux)
2var. find proxies on Win or Mac (in your case vip72 is Windows, 911.re on Windows too, but it's rare)
3var. seller, who substitute this fingerprint. For example - faceless.cc or airsocks.in (need write to support)