What happened

Snapchat used to be awesome and now my app wont update like everyone elses so I dont have the cool update and I have to delete the app and re download it just to see my best friends list accurately updated cause it wont update, I dont understand what happened. Also my streaks go out if I havent snapped the person all day long but with my streaks I snap them all in the morning and then they all snap back at some point in the day but its hard to tell if I lost my streak or if it was a fake loss and its ridiculously annoying and needs to be fixed because Ive heard of this on other peoples snapchats.

Tigersam101 about Snapchat, v10.14.1.0