In the last 48 hours I have tried on at least 10 different occasions to upload the documents and the site is unexpectedly crashing. The error message says that the website might be updating. Refresh does help but then you need to complete the entire process of logging in then saving the principal applicant's first form and then my spouse' only to get that error message again. It becoming a vicious cycle.
I also noticed on several occasions that it is taking 2 clicks for the system to perform a request (like check form) which generally happens in one. After the first click, system isn't responding.