Checkout not completing

I just installed my new theme but my checkout part is not completing.
Can u help me guys on that.
I m using woocommerce and I have checkout page and shortcode inserted as well

Have you tried directly contacting the author that you bought the theme from? Usually they will be fairly supportive and try to help you get things working.

Try that first, and if they can’t help, then come back here with some more info on the issue and I’m sure someone might be able to help.

I contacted them just recently and waiting.