It may take some time for the proctor to check your data. However, if you are still on the same page for 10 minutes or more after sending the photo, kindly restart your browser (write chrome://restart in a new tab and press Enter). If this doesn't help, restart your computer.
Please note that sometimes the Proctor may ask you to take another photo of the document. You have to do this, otherwise you will not be able to get access to examination.