Thank you and congratulations to the Bitcoin Core team!

Update:

Because I supposed, the usb-wifi adapter supplied by avalon may be defective: today I bought this USB-Wifi adapter (Cudy WU650 AC650 USB WiFi Adapter) new, tried it with this Wifi-USB-Device, but no success: Miner display says: "No USB Devices Inserted", even though I had the usb wifi adapter plugged in.

Last attempt, plug in USB Ethernet adapter that I bought separately and LAN cable into the Avalon miner.
 IP address is shown in the miner display. Enter this IP address in the browser on my PC. Must scan QR code from Avalon. Only now can I configure the miner with the Avalon Family App, set the pool and let it work.

Read the description at canaan.io for this Avalon Nano 3S Miner, it is said to work with Wifi. I don't want to use LAN cables all the time. There is no LAN cable laid where the miner is located and would have to be installed first. I would like to use WLAN. How can the problem be solved? Canaan Support no answer since 10 days.

Many thanks for the tip.
I tried it, pressed the power button for 10 seconds. Error still as described above.
Then pressed the switch button for 10 seconds, no change here either.
The tutorial from Zeus Mining did not provide any further help either.

Unlike the Nano 3, the new Nano 3S apparently has built-in Bluetooth, but the WLAN transmitter/receiver is no longer in the miner-unit, but is included as a USB-WiFi-module. I tried using a different USB Wifi stick from Fritz.Box, but this also failed to establish a connection.

Unfortunately I get no help at all from Canaan. Two support requests from me have gone unanswered for more than a week now.

Thank you very much for your answer.
In my case, this symbol for the factory reset with the cloud and the arrow pointing upwards is not available in the app for the worker (bottom right in the square in which the worker is displayed). That's why I don't know how to reset the worker.
Is there an option in the current Avalon Family app?
I have searched through all the options and unfortunately have not found anything.
Or is there a way to do a factory reset on the worker itself?

Hi, I have been reading this forum for a while and today I have a request of my own:
In January, I ordered the Canaan Avalon Nano 3S Miner, which was delivered just over a week ago. I put the device into operation on the same day and started setting it up step by step according to the operating instructions. I already had the required Avalon Family app, the device was recognized via Bluetooth and I was able to successfully add it to devices in the app. The next step was to set up my local Wi-Fi in the Miner. This is done with the app, which is connected to the miner via Bluetooth. I was able to select my Wi-Fi network in the drop-down field and enter the corresponding password. At first, the pop-up window “Error” appeared. Even after two further attempts, no connection could be established. When I tried again the next day, after selecting the WiFi network and entering the password, “Please turn on WiFi” appeared instead of “Error” (although the WiFi was active). As a result, I was still unable to put the device into operation until today (the display shows: IP: 0:0:0:0).
I contacted the seller several times by email, but the proposed solutions were not successful, as all the checkpoints were met (2.4 ghz WiFi, password and WiFi correct, etc.). The seller then asked me to test the device in a different WLAN, which I was able to do this weekend. However, exactly the same error, no connection to the WLAN possible here either.
I contacted Canaan support a week ago and again three days ago. However, I have still not received any answer or reply from the manufacturer. I find that very disappointing.
I have been using the predecessor model Avalon Nano 3 successfully as a solo miner and heater for my bathroom for about 2 months and initially there were also problems with the WLAN connection with this device (the connection setup is different here, however), but these were resolved within two days and the first device has been running successfully ever since.
Perhaps one of you has an idea of how to solve the problem? I would be glad about your advice. Otherwise I will wait and see what the seller answers me and whether I get any response from the disappointing Canaan support.
Thank you!

As I know you only can do mining with ASIC miner.