It appears that you must reinstall the software and download all of its components.

The issue is IP subnet conflict. A VPN connection must not have the same subnet on both ends, so you must check this and change the subnet to resolve the issue.

Basically there is warning to the firewall that says that subnet is already use before you can configure or add subnet

SANGFOR SSL VPN has built-in all-round security protection polices including identity authentication, endpoint security, transmitting security

you use the third tools for removing the IP conflitcs issues

The problem is IP subnet conflicting. One rule on a VPN connection is to not having the same subnet on each end so you must check it and change the subnet to solve the issue.

The conflict must be resolve first because it will affect the communication between different locations.

You can use third party appllication like Advanced IP Scanner to check for IP conflict

Conflicting issue occurs when you have same network on different interfaces which is not a good practice for routing or VPN etc. Check your all classless networks and assign IPs to VPN peers accordingly.

nice lets try