| In this case, please refer to below and observe if any can fix the issue: 1. Clear your browser cookie 2. Using another browsers 3. Factory default your KN/KH a. For KN: Pressing and holding the reset switch in for more than three
seconds when the unit is running resets its configuration to
the factory default settings. b. For KH1508Ai/KH1516Ai: Please refer to page 35 of user manual for detail https://assets.aten.com/product/manual/kh1508ai-kh1516ai-fhd_um_w_2021-01-05.pdf |