On the other hand, I panic...
Indeed, I installed everything on 2 new esp32 eth01 through the link you provided me and the adapter for usb connection.
Wifi connections also via this link.
Then, I restored my .tar backup (there too on my 2 new esp)
And there, it is impossible to reconnect to wifi.
Only the ethernet connection is possible.
I tried many manipulations on the 2 new esp32 (clones of the original and by plugging them only 1 by 1, never 2 at the same time) and impossible to connect to wifi or even find them on my router.
The only way is to connect to ethernet, go to wifi setup and start the procedure again and it works.
I keep the wifi ip address and at the slightest power outage of the space or internet cut, it is again impossible to reconnect to wifi.
The problem is the same on the 2 new esp32.
On the other hand, no worries on my original esp32 eth01 where I can connect easily or in wifi or ethernet.
I tried to impose the wifi ip but it doesn't work either.
My problem is therefore this one, if I install my pool project at my father-in-law and me and that it is mandatory to go through my usb serial adapter to search for wifi or other it will be very complicated especially since my esp32 is found in a box and a pcb that will prevent me from recovering it and accessing the gpio0, EN, RX and TX. Do you understand?
The day I change my internet provider or wifi password?
Please tell me that there is a simple solution to reconnect the esp32 to wifi in case of change and especially at the moment T to connect it at all

My project is coming to an end and if it's so complicated to connect to the wifi, it's really going to cause problems

PS: the AP mode never appeared on my iPhone or MacBook even by removing the ssid and wifi pass to test.