My Wesbite Got Deindexed from Bing Today

Everything was working fine, and I was getting a lot of traffic from Bing. But suddenly, when I woke up today, I noticed that all my links had been deindexed — there’s no trace of my website on Bing anymore. This happened to me before, about two years ago, and it was only fixed after six months (by contacting support). Now it’s happened again.

Does anyone know why this might be happening? I publish unique content daily, and Bing used to index it within 60 seconds.