@ygsq Hi, thanks for posting question on our community. It is suggested to check the settings below: 1. Disable QoS, please access http://tplinkwifi.net and go to Advanced >> QoS to disable it. 2....

@HKW Hi，thanks for posting question here. You may refer to this thread to check: VPN Client on Wi-Fi Router Is Not Working

@pjschwartz Hi, after unchecking Enable PSC, how about the connection now? You may keep on eye on it.

@WookieMan Hi, if firmware recovery does not help, I am afraid that there is no better method. May I confirm the exact issue on your router? We can try to provide some suggestions first.

@HKW Hi, if you may check the firmware on Tether app or web interface. It it shows Firmware is up to date. that means your current firmware has been the latest already. And you have problem setting...

@r1s1x_2 We have reported the issue to the support engineers, they will likely reach out to you via email to continue to troubleshoot your issue. Please check your email box and confirm.