Membership checkout at Nginx

Dear Sirs,

Please, the link to the membership check out is not working.

I have migrate to Nginx server, and when i click at check out button, it goes to the store page, and when you click again at checkout button it reloads the store page.

Give a try: http://www.obrasdarte.com/planos/

Check out button text: “Gostei desse!”

Please, how could resolve this conflict?

Thanks and Regards,

Tony

https://wordpress.org/plugins/paid-memberships-pro/