Starting Point not ping

i’ve trouble pinging by starting point machine i got ifconfig tun0 e tun1 abled (i don’t know if it is right) , the openvpn connecion started correctly,and when I check the Access page on HTB is always connected (also before the openvpn connections)
Anybody here got the same problems? thanks
note : in the last days I’m successfully connected to the machine many times but now I don’t be able yet