I have no idea which certificate they use.
Hm. Is any wrong with that certificate type? I have nothing changed. Netlify creates the SSL certificate itself.
Can you share the URL to their site?
Do you mean my page? I talk about my page, not about theirsr.
Theirs please.
Nothing is wrong with EC certificates, but some clients might not support them. (Very few, and very old)
I see the same error on the observatory whilst ssllabs gives me an A+ (not that it matters).
That what I am thinking too. Might try the short chain instead?
We can check using valid-isrgrootx1.letsencrypt.org:
That one is valid. Test for letsencrypt.org itself returns an error. Probably DST Root X3 issue.
Yet with https://valid-isrgrootx2.letsencrypt.org/ we get this issue.
https://tls-observatory.services.mozilla.com/static/certsplainer.html?id=188777607
Weird, the explainer sees ISRG Root X1 as a proper root, due to the red dot (HELLOOOO COLOUR BLIND PEOPLE!), so what's wrong with this one? Without proper verbosity, it will remain a mystery...
Has anyone tried with any other FREE CA?
Btw, this is also true of RSA certificates with SHA256 signatures.
If you want overkill compatibility you have to find a CA willing to sign a certificate using the older and not very safe SHA1. (And I'm not even sure if the CA/B BR allow that. -- it looks like they don't)
Not me, I'm too cheap!
Hey Osirisā¦ Thatās right, but I canāt explain it better. What do you want to know?
I set up a DNS redirection from āStratoā to Netlify
I only use the certificate from netlify and Hosted directly from my GitHub repo.
I have one subdomain named app.todaysordersystem.com
I use firebase as SaaS backend.
I donāt have more information, or do you need any other information?
Ps: I have absolutely no experience with SSL certificates.
Please be gentle, Iām just a stupid student from a bad university in Germany
What you need to know is that your website is working fine.
If somebody cannot visit it, it's most likely a client issue.
no, you do not. www.app.todaysordersystem.com is a different subdomain.
Thanks @9peppe. If itās a problem from Firefox, I will wait until they fix it.
@Osiris if itās a way to help you to help me to fix fix it, Tell me. I really appreciate your help.
We don't know what you're seeing. What would you like to fix?
I'm also not sure what requires fixing. The Firefox Observatory seems to be broken, unrelated to your website.
I think this is my answer. Sorry for struggling and many thanks for your help!