Hello! The error here is different. OpenSSL 3 doesn't accept certificates signed through SHA1. Since 2017 we have been signing client certificates with SHA512 and you have a pair generated in 2016. We don't force the renewal to avoid sudden and unexpected disconnections to our unaware users. Thank you, you're a long time customer indeed! Please: log your AirVPN account in to the web site click "Client Area" from the upper menu click the "Devices" button click you