I correctly issued and installed (several times to be honest) the certificates.
The website is correctly secured and works fine, until I connect to my corporate VPN using Pulse Secure.
Using the same connection other websites secured with Let’s Encrypt certificates (like this forum) are working correctly, but mine https://gsdprague.com is not.
I reckon that the issue lies on the fact that when connected to the VPN, the “Issued by” field of the certificate appears as an alphanumeric string instead of “Let’s Encrypt Authority X3”.
Please fill out the fields below so we can help you better. Note: you must provide your domain name to get help. Domain names for issued certificates are all made public in Certificate Transparency logs (e.g. https://crt.sh/?q=example.com), so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.
I ran this command: n/a
It produced this output: n/a
My web server is (include version): Apache/2.4.38
The operating system my web server runs on is (include version): Debian 10
My hosting provider, if applicable, is: VPS resides on DigitalOcean
I can login to a root shell on my machine (yes or no, or I don’t know): yes
I’m using a control panel to manage my site (no, or provide the name and version of the control panel):
The version of my client is (e.g. output of
certbot --version or
certbot-auto --version if you’re using Certbot): certbot 0.31.0 (for hivemind.gsdprague.com I manually installed and configured everything, but the issue is the same)