Crossposting is a bit of a weird thing here on Hive. Some have more acceptance towards it, and others don't. I've been pretty relaxed on the idea of them in the past, but as the community grows I don't think they're very fair. Posting in one community, then crossposting in another to get double the rewards while not contributing to that other community in any way is a bit of an insult.

You'll find people on Hive aren't likely to curate a crosspost for this very reason. And some outright refuse to accept them altogether. That's the direction my community is now going in. The people that are active and actually offer their time and effort to the community get rewarded; those who just dump a post from elsewhere don't.

You seem to be new to Hive so hopefully this gives you a bit more context on the whole crossposting idea. In general it's best to just avoid it. Few are going to curate the crosspost and many will just mute them. It's seen more as spam than contribution.