To enable crossplay on your space engineers server:
- stop the server
- edit the SpaceEngineers-Dedicated.cfg file
- replace the following:
<NetworkType>steam</NetworkType>
<ConsoleCompatibility>false</ConsoleCompatibility>
by:
<NetworkType>eos</NetworkType>
<ConsoleCompatibility>true</ConsoleCompatibility>
- Save and restart server
Please note, to work in crossplay you must not have activated any steam workshop mod and not load more than 3 planets