I did it on my MacBook, my iPhone, my Android, my Windows & even on Ubuntu
It did not make a difference whatsoever.
Try creating a different account (although it made no difference for me - always failed to save one entry or another).
I remember reading somewhere in this thread about how the portal has a limited memory allocation & fails to save any entries (files or text) past this hypothetical limit. I remember the user eventually figured out the right amount of entries & successfully submitted their application. To give you a further hint of the right post to look for: the user applied with their wife but the wife was successful immediately. The user unfortunately was not. They eventually updated with their successful attempt and their findings. I would suggest you look for that post because it seemed to make a lot of sense - I personally realized some things which I failed to in my 10 account application spree!