have you tried another browser or computer? reboot modem?

V2 support qos. you can see their FAQ. https://www.tp-link.com/uk/faq-1742.html Guiligan wrote Model : Hardware Version : Firmware Version : ISP : Quisiera saber si la V2 del Moden Router tiene...

from my point of view, you may contact tp-link support and ask for troubleshooting.

I have tried to contact the official tp-link support. They also didn't have any idea, but they said this requirement will be sent to their engineers.

here is an instruction for your reference: https://www.tp-link.com/en/faq-1661.html If it still doesn't work, you 'd better contact technical support team for futher help

do you mean the device time get delayed than the real time? can you share with us some screenshots? make sure your kasa app is the latest version as well