MacBook Air 2020: WIFI but no Internet connection

Hi all,

up until this morning I have had no issues with my MacBook Air and Internet access via Wifi. Since this morning however I cannot access the internet via my MacBook Air, whereas the Wifi indicator states the MacBook is connected. We have several other devices connected via Wifi and they all work fine.

Since then I have run a Wifi diagnostic report and tried several options. I have rebooted my modem and router. I have reconnected to my Wifi network. In System Preferences/Network I have added another location, I have renewed DHCP-lease, I have added DNS open servers (1.1.1.1, for instance. I have deleted com.apple.airport.preferences.plist, com.apple.wifi.message-tracer.plist, networkinterfaces.plist and preferences.plist from systemconfiguration. I restarted my MacBook in recovery mode, and even there still no internet connection. I enclosed an etrecheck report I just ran. Nothing seems to work.

When I connect my Macbook via Ethernet, I do have Internet connection.

I hope someone can help me, because I am running out of options and ideas.

Regards