Vpn connection

For some reason can not get vpn to connect anymore am with ipvanish set up through Zomboided and on tryed uninstall and reinstall reset up to ipvanish got up list of servers tried most London servers just keeps coming up could not connect try another server it was fine 2wks ago but now will not connect to any server works fine on my android box and mobile but not on my vero 4k and 4k + tried reinstall on both boxes set up vpn again same message could not connect