Client can ping server BUT server cannot ping client

[iyorishuka]

Please help, I just install OpenVPN Server in Ubuntu using https://github.com/Nyr/openvpn-install
My server VPN running normally (IP : 10.8.0.1).
- And then I install Client Computer A (Windows 8.1, all firewall off) with "openvpn-install-2.4.4-I601.exe", it can connect to the server & browse the internet normally (Client IP : 10.8.0.2).
Client Computer A (IP : 10.8.0.2) can PING server (IP : 10.8.0.1), BUT why Server CANNOT PING to Client Computer A???

- And then I install Client Computer B (Windows 8.1, all firewall off) with "openvpn-install-2.3.12-I602-x86_64.exe", it can connect to the server & browse the internet normally (Client IP : 10.8.0.3).
Client Computer B (IP : 10.8.0.3) can PING server (IP : 10.8.0.1), and Server also CAN PING to Client Computer B nicely.

My question is, what's the different between "openvpn-install-2.4.4-I601.exe" VS "openvpn-install-2.3.12-I602-x86_64.exe", that cause the Server CANNOT ping to Client Computer A ?

Can anyone help me...
Thx b4.

[TiTex]

check your firewall again on Client Computer A

[iyorishuka]

Client Computer A firewall is off.
Btw I install openvpn-install-2.3.12-I602-x86_64.exe in Client Computer A & Server Can ping nicely to Client Computer A.
But why everytime I install the newest installer : openvpn-install-2.4.4-I601.exe, then Server cannot ping to Client Computer A?