I often get a reply from tp-link support for one or two business days if I send email to them. Not sure why yours has been delayed so long. Totally understand your feeling~ It's better to send...

it's better to contact tp-link support by email directly to get further help about this issue.

Is the 5GHz LED light on? You can also check whether you enabled 5G wireless radio. If the LED is on, confirm whether your mobiles and computers support 5GHz network.

You may misunderstand Kevin's answer. If you can provide an error screenshot, it will be easier to help you analyze the problem. What's the OS version on the iphone? I just tried open the original...

sujithpsg wrote please help me to downgrade . how to do this? Hey, kunkka mentioned the method and you can refer to it. I contact tplink and they told me how to downgrade the firmware. You guys can...

? which model do you own?