Hi @Seabraz
Welcome to the Sonos Community!
I’m sorry to hear of the issues you’ve had in trying to get your Beam connected to WiFi. I have few pointers that may help:
Sonos Home Theatre products, such as your Beam, will only ever connect to 2.4GHz WiFi because they reserve their 5GHz radios for communicating with satellites (your surrounds speakers and/or Sub(s), if you have them). So, it is important to ensure that you have not disabled the 2.4GHz WiFi broadcast from your router (I doubt that any router would do this by default, but if you have manually disabled the 2.4GHz radio yourself, please re-enable it).
During WiFi setup, it can often help to ensure that your phone/tablet is also connected to 2.4GHz rather than 5GHz. This can become an issue during setup if the router is forcing your phone/tablet onto 5GHz with “band steering” - if this is happening, it may help to separate the WiFi into two broadcasts - 2.4GHz and 5GHz - rather than one. If you only change the SSID (network name) of the 5GHz broadcast, you can set the Beam up on 2.4GHz while your phone is also connected to 2.4, then combine the two broadcasts back into one when the WiFi setup process has completed successfully. For instructions on how to do this, please consult your router manual, or contact your ISP if they supplied the router.
I recommend you keep the Beam wired to ethernet while performing WiFi setup.
Testing your Beam on other network is an excellent idea - if you use a hotspot, please be aware that you’ll need another phone/tablet to run the Sonos app. If the Beam won’t connect to that either, I would recommend that you get back in touch with our support team for further troubleshooting.
Please also note that your surrounds are now a part of a separate system from your Beam - you’ll probably need to reset those to get them working with your Beam again, though if you manage to connect the Sonos app to them, I would recommend that you reset the Beam once more instead.
I hope this helps.