Dont waste time custom programming an integration into your ticketing system to HyperFair API. Use this Plugin which supports tickets to your Virtual Event with Woocommerce, Memberpress, and I am sure others as requests come in. This supports a single PLACE in Hyper Fairs Virtual Events. If you need multiple places ask us about a premium version. You must have a Hyper Fair account to use this plugin. Credentials are provided by Hyper Fair. Includes a short code [hyperfair-registration-login] that can be used any place a registrant user is logged into your site and needs to login to your Virtual Event with Hyper Fair. For supoprt go to https://www.wpconcierges.com/plugin-resources/hyper-fair-registration/