There's no fix to the edit function. You are limited to a certain amount of time. something like five minutes only to edit any of your messages. as far as the email notifications goes that's something the administrators have to deal with. as near as I can tell the notifications are working for some so I don't know why everyone one is getting them.
There are galloping problems with the sw. I am denied my normal password, cannot edit sometimes, no funny face dropdown, on and on. Usually after a day things work again.