You can no longer buy certificates that are valid for 3 or even 5 years. Since 2020, 398 days or about 13 months is the maximum, and in the near future it will be even shorter.
https://thehackernews.com/2020/09/ssl-tls-certificate-validity-398.html
https://www.theregister.com/2025/04/14/ssl_tls_certificates/
What exactly do you mean by āthese extensions to stop popping up every time the Letās encrypt ssl expiresā? Iām using Certbot on my server for years and it automatically renews my certificates without any problems and without me even noticing, and it does the same on millions of other servers worldwide.
In 2025 there is absolutely no reason for a home user, and I think for most business use cases as well, to spend money on a certificate. If the automatic renewal isnāt working for you, you should try to fix the problem thatās causing it not to work, rather than trying to work around it by buying a certificate.
You could start by filling out the support template and describing your setup so that the community can try to help you.