I guess the problem is that you are not having ping response but the VPN is working.
Check it.
The VPN connection IS established, despite you are not having an answer to your ping because there’s a
default “Global Rule” in Comodo Firewall to block incoming ECHO REQUESTS.

See “Global Rules”, is the last one on the list: “Block ICMPv4 in From MAC Any To MAC Any Where ICMP Message is ECHO REQUEST”
Delete that rule and you will have your pings answered.

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