What: we are discontinuing support for Wyvern order posting to the OpenSea shared storefront contract on Monday, July 25th. This means that we will no longer accept any Wyvern programatic order submissions, and you will receive an error if you attempt to hit the endpoint.
Why: we have continued to allow Wyvern orders to be submitted to the OpenSea shared storefront contract while our team fixed a vulnerability. That vulnerability has since been resolved, and opensea.io now uses Seaport for shared storefront orders.
Developer Action: if you haven't already, migrate to our new order endpoints. https://docs.opensea.io/v2.0/reference/create-an-order