Smart Home Connect Wi-Fi - can't see Bosch and Electrolux after internet outage

Hello, I am using the Connecticut smart home app where I have a Bosh dishwasher and Electrolux oven connected.
Today the internet at home disconnected and I lost connection from my tel with both devices.
When I go into the app to reconnect, pair the devices to wi-fi with the tel, it pops up saying it can't find the device.
What can I do to reconnect the devices to the tel?

You will probably have to re-pair your appliances. That is, put each device into pairing mode - it's probably in the manual how to put the dishwasher/oven into pairing mode.
Only then will they be found on the tel.

Thank you for your reply, but remind me how to make it to the end.
I.e. pairing.
I have the smart home wi-fi app enabled on the tel, does the Bluetooth have to be enabled too and so pairing done too?
And when I do a search for an appliance on the Bosh dishwasher, for example, it doesn't show me. This is the message that pops up, the same for the oven.
How do I enter the same network into the dishwasher and the oven?

Added after 15 [minutes]:

It's also the case that when I go into the Wi-Fi settings, it doesn't show this network temporary oven name

First launch: linking the device to the app (connecting the smartphone to the Wi-Fi network emitted by the device; Android searches on its own, iOS has to search manually; example network: @AJ_OV:xxxxxxxxxxxx ) something like this