New Group posts on Facebook differs from retrieved getGroup data

[rayms]

When I look at a public Facebook Group's About section, I see a message that says: "990 New posts today, 12,144 in the last 30 days."

However, when I use getGroup and scrape 10,000 posts, I retrieve posts that go as far back as 2014, so the volume of posts is much lower. In addition, when I analyze the data, I do not see 990 posts "today" in the retrieved data, but much lower, 69 posts.

I use this code to retrieve the posts:

group_id <- "XXXXXXXX" group <- getGroup(group_id, n = 10000, token = fb_oauth, api = "v2.11", feed = TRUE)