I Have received several complains about people’s application showing expired after they have completed the process and even paid. I Have spoken to the folks at Visa Section, Immigration Headquarters and they have confirmed it’s a TECHNICAL HITCH. If you face that problem please call the number on the website and ask for the visa section and you provide your reference number upon which they will reverse the application to either in progress or approved or rejected as the case may be.
All the best guys and sorry for the problem.
George