Eway Payment Gateway v5.2.0 has been released. Events Manager Pro integration has been upgraded to v3.2+ Gateway API and support for its legacy gateway has been removed.
Events Manager Pro
Events Manager Pro brought a new Payment Gateway API with the release of v3.2, with a fallback to legacy gateway integrations. To ensure that the Eway integration continues to work into the future, this release replaces the legacy integration with a Gateway API integration.
NB: Eway Payment Gateway v5.2.0 and later now requires a minimum Events Manager Pro version of 3.2.0 or later. Upon upgrading, please check your Eway gateway settings.
You can update to the latest version from your WordPress plugin admin page. Here’s the full changelog for Eway Payment Gateway.