They said they had something personal going on (albeit temporary) And while you, to your credit, did wait a while to check again, which ended up bringing you a positive response.
But then you accidentally seem to have backtracked by asking a question that likely brought up bad memories. Fyi I mean no hate with this. I'm genuinely just trying to help you see the possible context of what may have happened. (Lord knows it's hard to tell emotion through text nowadays )