This solution worked for the firmware problem; https://community.tp-link.com/en/home/forum/topic/708890 I now have the latest firmware, but it doesn't fix the 5G issue: it still get's enabled every...

"new" firmware doesn't work for me:

@David-TP Hello David, Thank you for your quick reply. No, I don't have a reboot schedule. The router is new, only a week old so everything is new to me. I've heard something about a beta firmware...

I've disabled the 5G Wireless network because I only need one WiFi and 2,4 is better dan 5G. And every day the 5G network gets enabled. I use a wireless schedule and I think that's the issue. That's...