Venue 11 Pro does not see my home network

I have a Dell Venue 11 Pro 7140 with Windows 10 loaded and all updates installed. I've had this tablet for a little over a year. Never had problems connecting to my home network before today. I recently installed a Asus RT-AX58U Dual Band Router. All of my other devices, phones, tv's, laptops, connect to my network. But my Venue 11 Pro does not see my network. It sees my neighbors networks that are around me, sees & connects to my work network, even sees & connects to my phone hotspot when I turn it on. I've even entered/added the information for my network in "Manage known networks". I'm at a loss on what is causing this. Can anyone offer suggestions on whats going on please?

Tim Barber