Interesting - I've seen posts from Lemmy.world and Lemmy.ca pop up here. I wonder if it's an issue with lemm.ee?
lemdro.id was having issues with federation to Kbin as well, but it turned out to be a misconfiguration of their Lemmy settings. They fixed it and now it federates fine.
I don't think there's anything I can change on the magazine level to make it better, sadly.