1. Please go to "System Configuration -> Wireless Advance Settings" and enter the correct distance in the field. This should be done on both side of the network.

2. Please note that WH-5400CPE's antenna has 45 degree Horizontal coverage and 40 degree coverage only. Remote devices should be within this angle to receive wireless signal properly.

3. If it still doesn't work. Please reset your AP/CPE and try step 1 again.