We love to see your interest in distributing on the Epic Games Store. We see you have a few concerns about crossplay functionality and about ensuring your product meets these requirements! While I can’t provide specific advice, I can share our support articles, which I highly recommend reviewing to help with the crossplay setup!
Our Crossplay Introduction page provides a clear overview of the EOS SDK used for crossplay. If you are looking to gather more technical details, we recommend reviewing our Crossplay Technical Overview article, which provides more details on the SDK integration. And finally, for any questions on restrictions, please review our Crossplay Restriction article to help control player interaction options.
We hope this helps. If you have any additional specific questions that do not get answered by these articles, you can also submit a private case discussion! Just select ‘Epic Games Store’ as the topic, and our partner support team will be happy to help.