People in your workplace don’t know shit. There are a few who know stuff but the majority is dumb, careless or the combination of the two. Surprisingly the higher you go the more dumb and careless there are. We are designing monster billion dollar construction projects and some of my colleagues have problems with understanding written english. Others cannot learn a software that has literally 3 buttons in them they have to press. I don’t even know sometimes why I am trying.
Have you tried zerotier? Another option is to get a vps with unlimited bandwith and setup ovpn server on it. Then you need a router that can connect as a client to vpn. This way you will have a public ip and you dont need to mess with tunnel services. A vps with public ip is about 10 bucks a month.