Hello again TxDoc. Just to add to what leeshor and Jeffrey already posted; have you installed any new apps lately? Are all of your WiFi options grayed out in the WiFi Settings menu?
I had an issue on my wife's phone last year after she installed the USPS app. It instantly locked out all WiFi Settings on her phone; I couldn't turn it on / off, couldn't disconnect from our home WiFi, couldn't add a new connection, etc. Everything was locked out. I uninstalled that app and rebooted the phone and all was normal again.
Have you tried booting into Safe Mode to see if you have the same issue?
It's 3:45 A.M., and this is
my I first chance to reply. I printed out your replies and will see what I can come up with and get back possibly by tomorrow evening. Didn't want to y'all to think I had not read the help. Will see what I can determine.