Best Permalinks Settings

On your WordPress install, if you go to Settings > Permalinks, you will have several options on how the link format for your website works.

A general rule of thumb is to always set it to post name.

For CartFlows users this would generate clean permalinks for CartFlows steps.

Otherwise, they can be like:
http://domain.com/cartflows_step/checkout-page/

cartflows_step is in between.