Sonru provides the application that enables you to record the video interview, but any decisions in terms of extension of deadlines etc. are dealt with directly by the company that invited you to complete the interview. You will have to contact them directly, which you can do by replying to your video interview invitation email.
If you cannot complete the interview before the deadline, you must contact the relevant HR person or team with your request for an extension. They will then contact you directly with their decision.
Please, let us know if this article was helpful by rating it below.