@Mustang67 I remember when I was applying for my exemptions I was always told by numerous people to make sure the Dr ticks the box that say the medical condition is for 13 weeks, otherwise they will reject it.  Then after 13 weeks you apply again with the same thing, which is why I had to get three of them in a row.  Maybe that is a main issue with your rejections.  So ask your GP about that.  Mine was already aware of it so it wasn't an issue getting it done.