@Andone I think the problem is: 1. The load balance not able to generate dynamic ip from WAN-2 that cause the ip keep showing 0.0.0.0/link down/disconnect/offline....so I change to static ip with...

Hi...I am using TL-R470T+ for Failover and combine bandwitdh from Two WAN. But it seems neither of the function works. Both my modem works well if were used alone. My setup: WAN 1 as Primary, ISP 4G...