Using Developer tools I can see the following error:
Access to fetch at 'https://emailoctopus.com/lists/undefined/members/embedded/1.3/add' from origin 'https://2023.stateofcss.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource. If an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with CORS disabled.
POST https://emailoctopus.com/lists/undefined/members/embedded/1.3/add net::ERR_FAILED 404
On this page https://2023.stateofcss.com/en-US trying to add my email does nothing.
Using Developer tools I can see the following error:
Access to fetch at 'https://emailoctopus.com/lists/undefined/members/embedded/1.3/add' from origin 'https://2023.stateofcss.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource. If an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with CORS disabled.
POST https://emailoctopus.com/lists/undefined/members/embedded/1.3/add net::ERR_FAILED 404