PPTP server VPN Connectivity issue

Hi all experts,

I have configured PPTP server on mikrotik 1016. The network is as below.

3 Wan Load Balancing PCC Method.
DHCP pool is 172.x.x.x/16
VPN pool is 192.x.x.x /24

The issue is when I connect using win 10 machine the IP is issuing from vpn pool 192.x.x.x/24, I can ping my router address(Gateway) but unable to ping the clients that connected from DHCP pool of 172.x.x.x

Need solution on this.