The whole "We're not going to pay you because of something secret we know you didn't" has always been an abusive clause in the whole bug bounty market and I think it's funny people are just realizing it.
-
Ive had nothing but good experiences reaching out to other researchers when I felt there was something not right. Latest rejection was because they did 1 year + long rewrite of group policy system.
So all submissions was put on hold, then when update rolled out if your exploit didnt work anymore- it was per definition a resubmission of the vulnerability that triggered the rewrite.....