I have this one group on Facebook. I try to add members to it, and instead of the members being added to the group, they get invited to the group. The group is Public, and the setting is set to "Any member can add or approve members." Every time I add members to group, it says "[name] has been invited to the group." What it should be saying is, "[name] has been added." Anyone has any idea why this is happening? And how can I change it so that it works?