When logging into Proton VPN, if you find that you are unable to connect, you need to address it immediately. Before attempting to connect through the VPN again, check whether you are able to use the internet without the VPN. If so, make sure to update the VPN app or software, and then attempt to connect again
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If updating the app or software doesn’t solve the issue, there’s a chance that Proton VPN is experiencing issues. Switching the server on Proton VPN may fix the problem. Additionally, altering the app’s general settings, specifically changing the VPN protocol settings, may help. The four VPN protocols available include OpenVPN, IKEv2, and WireGuard.

Switching off the Windows firewall or disabling the device’s antivirus may help allow the VPN connection to proceed. If you are still facing issues connecting Proton VPN on a different network, contacting the network administrator could be the best next step.

If problems continue, it is best to contact the Proton Support Center or reach out to their support team through the application or website. Fix your Proton VPN connection to once again secure the anonymity of your online endeavors and activities!

More Info: https://www.resetprotonpassword.com/
More Info: https://www.resetprotonpassword.com/how-to-reset-my-password-for-protonmail/