First time happening to me, a fanfiction deleted while I was reading it

I have the rss feed for ships I love, this morning I got a notification for a Shadowzel fic and I jumped on it. Three chapters published at 3:30 am. I opened it immediately and waited until 8 pm to read it. First chapter, everything is good andinteresting. I go to the next chapter and Ao3 says "we can't find what you're looking for".

Argh, so sad that this person decided in so little time to delete their work. But I also should start downloading my "mark for later" list.