Slack Review

I'd like to preface this review and state that I generally like Slack, I use it daily, it's an okay software for work-related fast communications. But I'd like to see it improved. 1. Notifications. They sometimes don't arrive at all or they come way too late and I don't know that I've been tagged and something requires my attention. 2. Unexpected log-outs. So annoying! 3. I don't like that there are limited slots in "direct chatrooms" folder and chats disappear from there. Please let it keep all of the people I've been talking to. It annoys me that I have to use search.