I would agree that it seems to be pointing to the LCS WiFi module.
I also have an LCS WiFi that's connected to my home network. Its been connected and I haven't had any issues for about 2 years. The only time it's required any attention was when I replaced my home router and I had to reconnect it. I was able to reconnect without any difficulty.
That experience rules out the LCS WiFi module retaining connection information that would prevent a connection to another network (router). And it confirms that connecting to another network (router) is as straight forward as expected. Which further supports the thought that the LCS WiFi module is not operating properly.
Maybe it just needs a trip to that spa/resort in Concord NC?