I can, but he is only able to log on using his cell service. I looked back at his profile and checked the MANY addresses and most are cell connections, his old ISP before moving and the shop one. None of those help. Only thing I can suggest is get AT&T to assign a new set of static IP addresses or use your cell as a hotspot for a laptop or wireless desktop.
Bill, see if you can load this browser at work.https://www.opera.com/computer/features/free-vpn?utm_source=bing&utm_medium=pa&utm_campaign=USA%20-%20Search%20-%20EN%20-%20Topics&msclkid=775915817c0d1284deeb4ec8505348ec&utm_term=Free%20VPN&utm_content=VPN_exact