If you are stuck on the Personal Details page, Employment or Education History pages, or an Application form page, and no matter what you push, you can't move forward, then you are missing a mandatory question.
As soon as you click Save/Submit, then Save again, any missing questions will highlight in yellow. You must fill out these questions before you can continue.
In regards to the Employment or Education History pages, it might be a date that is missing. Click on the little Edit icon, edit your section and click Save to see what might be missing. Anything that is mandatory and missing will highlight in yellow.
However, if your page still does not submit, please Request Support, let us know what page you're stuck on, and our team will be able to help you.