Do you control your Wi-Fi network's access point or Wi-Fi router?
Is your access point using AES encryption or AES+TKIP encryption for this SSID?
Definitely scan for networks first, as the receiver derives a lot of things about the access point in that process.
If it won't connect, and you don't think it will break the connectivity of any of your other Wi-Fi devices using that access point, you might try toggling the encryption type between AES and AES+TKIP, restarting your access point, and then trying to scan and connect again from your OS MIO+4K.
There are a lot of Wi-Fi protocol stack implementations that don't quite interoperate well between vendors' equipment, and the configuration item that I have found to most commonly prevent associating to an AP is the flavor of encryption.
This may sound old fashioned, but if you're planning to be streaming HD video to or from your Edision box, I'd use a wired connection if possible.
I don't remember whether the OS MIO+ 4K's Wi-Fi PHY can support 802.11ac or not, but that's probably the slowest Wi-Fi flavor I'd consider if I were going to do things like trying to stream HD video to or from it.
Security note: As a long-time cybersecurity person, I wouldn't advise anyone to use just WPA (vs WPA3, or WPA2) encryption unless the only things on that network are devices for which you don't have privacy or tampering concerns. WPA2 is also subject to some straightforward attacks, but the vendors are taking their sweet time in getting WPA3 rolled out to consumer electronics, so we have to make do, and use things like separate networks for older devices, while we wait for people to get their act together.