Spaces for SSIDs shouldn’t be invalid. This is a common practice for a lot of wifi sources both public and private. Although one can change the SSID, not everyone is able too because they might not have permission from the owner to do so. Another workaround is to create a hotspot with an SSID that has no spaces, but I feel like this seems like an unnecessary workaround.
I just think that SSIDs with spaces should be allowed on the migo application.