Maybe a virus, you phone caught a cold. Just kidding.
Are you using the Lit app? No that's only for Android phones.
The site hasn't changed as far at the edit functions are concerned. They did upgrade security protocols on the story side so that then link is a secure link. Coming soon to the forums side.
I don't know iOS - I'm an Windows guy - so I can't really help with your device, but maybe you did catch a virus.