No synchro in epic

[tinycrazy]

Good morning. I love rimworld. I have an issue. I play on an Imac and on a windows laptop. I've bought the game and all the expansions in epic games store. I've enabled synchronization in epic games cloud. But when I try to go on the same game, I can't. I see that there is a cloud update, and the current hard disk games. I say to go with the cloud savings, but in the saves there is never the other platform save.
how to fix it?
Many thanks