I checked and different country have different range of frequency. I not remeber exactly but some like 11 or 13 or 14 channels. You can set it in eDGe too. I changed in my eDGe and i my router too. Any difference.
And i think is not important.
The eDGe find the wi-fi network, so, i think si not a problem of this channels...

@NiaTrue. I have not other devices emitting radio waves.
Only maybe a wi-fi router working how one access point.

Like now, my idea is, try to set the dhcp and not static IP.

@Borisb I have no devices working with "n" standard...