I'll purchase their competitors product

Restart your router, clear all data in the Sonos app and try...if that doesn't work, connect Beam via Ethernet cable and pair again.

Thank you Palco but I’ve done thus several times already with no luck.

If you have a 1st generation Beam, I would also try the Sonos S1 Controller.

Good for you! If I had issues with Sonos products, I would move to another manufacturer too.. but I don’t have any issues with my speakers that are setup in two separate homes with totally different networks. One is a Ubiquiti network and the other is with Optimum’s combo device with a Ubiquiti AP to extend the coverage. 
 

I am wondering how many users with issues, live in apartments. I think it make staying connected difficult with so much interference for other routers so close by. Both my homes are single family dwellings so there are not many SSIDs that I can see.

Hardwiring one or more speakers could solve connection issues when there is a lot of WIFI interference, but it could be difficult for some to do.

We cannot rule out a hardware issue with BEAM WiFi.

That is why I added hardwiring speakers. Sonos has had issues with the WIFI card on some devices that’s not limited to soundbars.
But so many users are stuck on the marketing, “wireless audio” that they seem to prefer to be frustrated as opposed to enjoying their investment. 

Buzz,

You are absolutely correct.  I’ve been considering purchasing hard-wired speakers even before your reply.  And as a caveat to this conversation, I’ve gotten rid of several devices that require recharging as well. I replaced my laptop with a desktop.  My Apple Watch is in the drawer never to be used again. It was replaced with a nice self winding analog watch. All I have left now that requires recharging is an iPad and a iPhone.  Who knows what’s to become of those in my life.

Pools,

You are also correct.  I feel for condo and apartment dwellers. Theirs are a completely different set of issues.  As for me, I live in. a single family detached residence on a ¼ acre lot. I think the problem stems from a poorly engineered system and software coupled with employees that aren't putting forth their best efforts.  I’m a retired individual and I witness a lot of that these days.

I live in a condo complex, surrounded on all sides by dozens of competing WiFi connections.  My Sonos system is 100% reliable and I’m using a bog standard router/modem issued by my ISP.  So it would appear the engineers and employees are dong just fine in my case.  

I recently moved in an urban area. A quick WiFi scan churns up about 100 access points. I’m not having any WiFi issues and I’m also using the ISP’s WiFi. In my previous location (relatively tame at only 70 access points) I had two WiFi networks using the same subnet. The SONOS units were free to use either and would flip to the other if one went down for maintenance or I moved a unit into a low signal area -- without any fuss.