Were these all done in a short time on the same character? I don’t know much about game data, but this made me wonder if SE implemented something specifically for exploits like this. Like, you can only roll for the drop 10 times per conquest tally or some arbitrary time period, and after that the game stops rolling for the club in case you’re exploiting something. Is that possible?
The idea that they'd stop rolling based on number of runs on the off chance there was an exploit makes no sense. Limiting it based on number of runs to favor players who play small amounts, might make sense. I wouldn't even put some kind of character-wide depletable luck stat past them for particularly low probability events.
However, it was done on 2 characters(not partied, running seperate instances) over a roughly month-long period.