Are you on a dedicated 2.4gHz network? If it’s “band steering”, the GF doesn’t work on that, and needs dedicated band (if you’re not sure, call your provider tech support and don’t let them sell you on how wonderful “band steering” is (it may have other names, too). Likely fine for typical home electronics, but not good for the GF!
I’m so sorry you ran into trouble with centering and scanning. I see you already emailed us about this and we’re working on it there, so I’m going to close this topic.