Issues with wifi calling

We have a summer camp and the cell signal(Verizon) is very poor. We have internet access through Xfinity at the camp ground. I have tried, unsuccessfully to get wifi calling to work there. It will work at our House, where we have Cincinnati bell Internet. So I am not sure if this is an issue with Verizon, our phones (both Samsung) or Xfinity. We both have aging parents and do not want to miss an important call if something happens. I have tried all the usual suggestions, IE: restarting phone, enabling/disabling airplane mode etc. Weird thing is, it worked last year, for the most part anyway.

Re: Issues with wifi calling
Customer Service Rep

Good morning, and thank you for bringing this to our attention. Wi-Fi Calling is a vital feature to be able to utilize, especially with parents who are getting up there in age. I'll be glad to help in any way that I can. I've sent a private note to you, so we can pop your account open, and take a closer look at things. Please respond when you have some free time, and we can get started.