Bot isn’t sending messages

So I set up manychat, read through the forum, implemented everything I saw and still nothing. The bot isn’t sending messages ( for comment on reel)
Not only that, but also today I posted a story and asked people to reply if they want something ( I didn't set up an automation for that) and I asked a friend to type the word since I wasn’t getting any replies and he sent me a screenshot of instagram saying “message can’t be sent, story no longer available”, tried on another friend’s phone - same thing. So I just deleted my story. Iam getting fed up with this thing, does anybody know how to fix this or is there any good alternative to manychat?