@Solla-topee  Thanks for your response.

The most options you suggested in your posts where the first things I tried before switching over to smart connect and the same network names for the Wifi bands.

The connection status for 2,4g and 5g are at max, the tp-link tether mobile app also points out that the location placement is perfect for the extender.

If I unplug the extender most of my devices are getting a higher network speed (Mbps/sec) on the router (which is 260 Mbps without extender and with only 100 Mbps) + a stable connection with no infinity loading when browsing the internet on lesser connectity bars with a desktops or mobile device. 

When I bought the extender I also bought a second one for outside during the summer (same model) , I unpackt that unit yesterday and tried it to be sure it's not a production flaw one the first extender because these problems make no sense with this setup. 

At this moment the network stability and the speed are normal on the second extender (on the same: settings, model, firmware, location , tests, router, internet provider, devices).
I am gone give it one more or two day's because I hadn't the time to test alot today.

Should the problem return and also appears on the second extender I tend to send them both back and look for an alternative. If the second extender keeps performing well and only the first extender continues to cause problems. Then it must be a factory error for that device I suspect I don't see any other reason why it wouldn't function correctly.


Greetings shadowbutton

@Solla-topee 

Since yesterday the problem has returned, but now on the 2nd extender I started testing a few days ago.

Out of the blue, certain applications on my company laptop no longer wanted to connect. I then tried to simulate it on my mobile device while connected to the WIFI. Again, the network hung until I unplugged the extender and everything started working again.

After hesitating for a long while and resetting everything multiple times. I Have decided to return the 2 extenders to the seller (Amazon.de). It just can't be right that these extenders are so unstable. I've never had this problem before with TP-link products. I had hoped with the mesh technologies combining the router with those extenders I could create a stable network to cover the house completely but if the network get's stuck for no reason, something is really wrong with these devices ...

I tried to set it again to different SSIDs without smart connect and the problem seems now arises on both SSIDs (device dependent) , ( for example: device A  should suddenly work switching to 2,4Ghz after the network gets stuck and when switching device B to 2,4Ghz it still could not load everything correctly (only after pulling the plug ) 

It all started yesterday with MS Teams, during the day when it would no longer connect while on the local network. After rebooting, reconnecting the laptop the same problem persisted. I switched to my mobile phone where the same problem occurred, I went on 4G and everything loaded again.  As soon as I unplugged the extender the problems were resolved for both devices on the local network.

For some reason, the extender continues to cause problems. I don't think it is distance related as the router and extender are not very far apart and the problems occur very randomly.

You have to understand at a time when working from home and a stable internet connection is essential, that I simply cannot rely on these devices.

Another possibility is that the problem is not with the extender but with the router. But it is difficult for me to buy an extra router for only testing out this problem.

Greetz 
Shadowubutton

@Solla-topee 

The led lights are always up and blue.

I tried already with DHCP auto, on and off, tried Google DNS , Cloud Flare DNS , my own DNS server, setting up a short ip range at the end all the same result unfortunately.

Yes indeed I was contacted by someone from TP-Link technical support directly.

Kind regards

Shadowbutton