@O_Mariscos DFS (Dynamic Frequency Selection) channels are channels between 52 and 144. You're targetting channels between 36-48: This settings hsould be done on your main router 5 GHz radio (set a...

@olpetto77 To set iBE550 internet connection properly, you should contact your ISP for advise. It could be a "dynamic IP" of PPPoE - they should advise you on that.

@O_Mariscos Check your main router 5GHz channel. Archer C6 doesn't support DFS channels on its 5GHz radio. If you set you main router 5 GHz channel between 36-48 Mhz your C6 should probably see it.

@Annazafiri If you can't remember your RE management password you can reset to factory defaults (keep reset button presssed for about 10 seconds) and then re-configure from scratch - details.

@Siggetuna If after a reset the RE is not working and it's under warranty contact your retailer. Otherwise you may contact your local support for further assistance.

@Sens_Residence1 Most probably you can use port forwarding (same as virtual server) on your router to enable the manufacturer access - details.