VPN has disappeared from my iPhone settings

We have some issues with VPN settings disappearing from the menu, it worked fine the day before and next day the VPN is gone and a reboot of the computer does not solve the issue.

In settings under the “battery” area I used to have a VPN that I could toggle the switch back-and-forth to be on. When I went to go use it yesterday it wasn’t there. Under General/VPN icon it says VPN is not connected. I have never added a VPN app to my phone. It’s always been there and on my husband’s. I checked his phone and it’s still where it’s supposed to be but it’s not on my phone. I’d rather not reset my settings. Is there any other way I can get it back? I do have the latest software downloaded.

Thank you.

[Re-Titled by Moderator]