Have you considered using a different term other than "communities"?

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Submitted ⁨5⁩ ⁨months⁩ ago by FeatureRequester to discussion

It's completely fine and accurate but I was thinking it might be confusing to non-programmer/non-IT users who are not familiar with the term "instances" (because each instance is kind of a community of its own). Other platforms use less ambiguous terms like subreddit, guild, etc. Have you considered changing the word for it? It's probably not even an issue at all but it could be a little confusing.