Hi @dpw1957 ,
 
Welcome to Trend Micro Online Community.
 
Can you provide the following please:
 
Mobile Phone's OS: Android or iOS?
OS Version:

Also, can you name the application involved here?
 
There's 2 mobile applications of Trend Micro that have VPN.
Trend Micro's Mobile Security and Trend Micro's VPN Proxy One Pro(a.k.a Public Wifi Protection in certain regions) which one are you using?