It is easy to see the status of your application based on the color of each category. Here's a video explaining each color and there's also a screenshot below.
BLUE: You have not turned in any documents/statements in that category. (Ex: W-2 Forms below)
RED: You have not yet submitted the total number of documents requested by your Loan Officer, OR your Loan Officer has rejected a document. Note a category might also quickly turn red when your account is linked prior to gathering the total number of requested documents. It will automatically turn green once the documents are collected. (Ex: Pay Stubs below)
GREEN: You have submitted all of your documents and they are "in review" or your Loan Officer has accepted all of them. (Ex: Bank & Investment Statements below)