Theme GrandNode bug?

I use Theme GrandNode and PayPal Standard pro plugin but it doesn't work.

I add item to card start check out and select PayPal Standard Pro, follow prompts and never get redirected to paypal.

This cshtml files don't have css style payment-info-next-step-button for buttons.

Change the cshtml files

OnePageCheckout.cshtml

old code

<button onclick="PaymentInfo.save()" class="btn waves-effect waves-light">

new code

<button onclick="PaymentInfo.save()" class="btn payment-info-next-step-button waves-effect waves-light">

PaymentInfo.cshtml

old code

<button type="submit" name="nextstep" value="@T("Checkout.NextButton")" class="btn waves-effect waves-light">@T("Checkout.NextButton")</button>

new code

<button type="submit" name="nextstep" value="@T("Checkout.NextButton")" class="btn payment-info-next-step-button waves-effect waves-light">@T("Checkout.NextButton")</button>