Does the community subscriber count only show statistics from that instance? For example, I have accounts on two servers and I wanted to find popular communities across the fediverse. For the most popular community, two different instances show different numbers for subscribers and users/month. For example, the top listing for these two instances is this:

https://lemmy.world/communities?listingType=All&page=1

[email protected] 10.4k 12.9k

https://lemdro.id/communities?listingType=All&page=1

[email protected] 34 8.48k

I have an account on Lemmy.world and I have successfully subscribed to some communities on other instances such as lemmy.ml and beehaw.org. I can see the status of everything on https://lemmy.world/communities/listing_type/Subscribed/page/1

But some of my subscription requests to communities on those instances show "Subscribe Pending". Does each community on an instance need to give permission for me to join? Just as an example, [email protected] and [email protected] are pending, along with [email protected] and [email protected]. Also, all of my requests to kbin.social are pending, such as [email protected].