what has that got to do with someone who thinks they can get a visa because they go to the gym a couple of times a week? Medical is totally different. Yeah your pal cancelled but it was granted for legitimate reason
why would the system allow for edits after submission? They have to then check each edit as its pretty important info that applicants are submitting. Imagine if someone changed a major factor of their application without it being checked. No edits makes it totally secure for them and it clearly states that prior to submission and that no refunds will be made for errors in submissions. Pretty clear and simple to most people!