Google Play won't open on Desire S
So I just recently factory reset my Desire S however now Google Play will not open. Each time I open up Google Play I am presented with a white screen saying "no connection. Retry" but I have checked to see if I'm connected and I am - even the Internet opens up.
Also, my "Mail" will not open up either. it just keeps saying "there are problems with the security certificate for this site. this certificate is not valid yet." I can either press Continue, View or Cancel.
How do I fix these problems?