Problem with Protonvpn when updating packages

I get this error when trying to update package with sudo apt-get update

Hit:1 http://deb.fdmpkg.org bionic InRelease                                   
Hit:2 http://ppa.launchpad.net/inkscape.dev/stable/ubuntu focal InRelease      
Hit:3 http://us.archive.ubuntu.com/ubuntu focal InRelease                 
Hit:4 http://us.archive.ubuntu.com/ubuntu focal-updates InRelease        
Hit:5 http://us.archive.ubuntu.com/ubuntu focal-backports InRelease      
Hit:6 http://us.archive.ubuntu.com/ubuntu focal-security InRelease       
Err:7 https://repo.protonvpn.com/debian stable InRelease                 
      Could not connect to repo.protonvpn.com:443 (10.10.34.35), connection timed out Could not connect to repo.protonvpn.com:443 (10.10.34.35), connection timed out
Reading package lists... Done                      
W: Failed to fetch https://repo.protonvpn.com/debian/dists/stable/InRelease  Could not connect to repo.protonvpn.com:443 (10.10.34.35), connection timed out Could not connect to repo.protonvpn.com:443 (10.10.34.35), connection timed out
W: Some index files failed to download. They have been ignored, or old ones used instead.

I don't want to use protonvpn and try to uninstall it with:

sudo apt-get autoremove protonvpn

When I do this, I receive this error:

E: Unable to locate package protonvpn

Update:

there is no line for protonvpn in "Other Software" tab in "Software & Updates" application , but I unchack all lines and when click on close and reload button I get this error:

error image

Does anyone know how to fix this problem? Thank you.

A simple solution would be to first exclude the ProtonVPN repository from your apt sources, then later remove ProtonVPN if you no longer want to use it.

To exclude the ProtonVPN repository via the desktop:

1. Open the "Software & Updates" application: ^{Note: Do not confuse this with "Software Updates", which is something different.}

2. Click the "Other Software" tab and find the line that refers to ProtonVPN:

3. Uncheck the line for ProtonVPN and press "Close". The system will ask if you want to update, and you can press "Yes" to this.

   ^{Note: The update process is just a sudo apt update that runs to ensure the source list on your system is up to date.}

Now you should be able to update your system without the ProtonVPN repository blocking you.

_{Note: There is nothing in this answer on how to remove ProtonVPN, as the process often breaks networking in an Ubuntu installation. There are some answers on AskUbuntu that have varying degrees of success but, as I am not using ProtonVPN, I cannot say which one is more correct.}