@frankytaiwan Hello, The default username and password to sign in to Tether APP are both admin (small case). If you have changed the default password via the web interface, use the one you've created...

@Yilia Hello, may I know the model number of your TP-Link router? Does this issue occur on all the wireless clients or just some of them? What are they and are they connecting to the 2.4GHz or 5GHz...

@Mudit Hello, may I know the region version of your Archer C20 V5? We may say sorry that the Archer C20 (IN) V5 is not compatible with Tether, and it is a customized version for the local market....

@Mam_123 Hello, Below is a setup video for your reference to install your wireless router: https://www.tp-link.com/support/setup-video/ But if you still failed, please refer to the troubleshooting...

@testtestwu Hi, The model of your router is different as web's, his issue is that he enabled the remote management on his WR841N, do you also enable it? BTW, please post your issue on the...

@saradon Hello, You may try to change the 2.4GHz wireless settings like wireless channel and channel width, you can change the channel to 1/6/11, the channel width can be 20MHz, then monitor again....