....
That led me to think what if someone built a bot to abuse their service? or what else it could be?
Most likely someone created a bot and used up the entire existing accelerator quota. I think that reason is the most reasonable. Because the existing quota runs out very quickly. So it's impossible for ordinary people (not bots) to use up the accelerator quota in just 5 seconds. Therefore, I also have confidence that it was all caused by a bot designed by someone.