plugin woocommerce error

I have this plugin installed and configured with the most advanced version of payment, the problem is that after adding the products to the shopping cart when I go to make a payment, the system redirects me to a https url as I have no security certificate returns me an error page.

My question is: if I install a security certificate would solve this problem or how I should do to make the plugin not redirect me to a https since in the plugin configuration options there is no parameter of this type to change.

thanks