I have Avast Security Ultimate running on my Galaxy S8. I am finding that the VPN will disconnect without warning and when I go to the app the button reads ‘disconnecting’ but does nothing. When I tap the button it will then read ‘connect’ and when I tap the button again nothing happens and I am then required to restart my phone. Once the phone reboots the VPN connects fine, but I am finding that I need to restart my phone several times a day to resolve the problem.