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.
My domain is:
https://coalitionvelomontreal.org/
Invalid Certificate
I update this website but I am not a programmer 
Can you help me?
Do you recall how the last cert was obtained or installed?
[I realize it expired over a year ago and you may not recall - but I have to ask]
I have no idea may be one of our colleague gone now
Well then we start with nothing…
Let’s figure out which ACME client you have.
Try all of these and reply with findings:
which certbot
which certbot-auto
which letsencrypt
which letsencrypt-auto
which acme.sh
and also:
sudo crontab -l
it it chinese for me…could you explain step by step? sorry
Sure.
Do you have root access to the system?
[SSH or Putty]
OR
even further up / simpler…
Do you know where the site is hosted and how it is managed?
Did I lose you?
Am I speaking geek?
…
If you had to make a change to the site, could you?
If so, how do you make changes?
I can make some changes, like permissions, creating events and notes.
hmm…
WordPress?
Can we speak with whomever set it all up for you?
Is there a “control panel” ?
the guy is not available, that’s why I am contacting you to try do find a solution
I found this http://modules.processwire.com/export-json/
Understood but I’m trying to fly an alien spaceship blindly!
Whom do you pay for hosting and such?
Does the bill show what your getting?
hum, no, the guy does not want to reveal this information because there are several clients on its servor
What guy?
Can we speak to this “guy”?
Can he help with getting you a new cert?
The guy who has created the site.
it is not his priority…
Then the system is under “lock and key”.
He is the only one with a “key”.
There is no documentation of the design/implementation.
You are at his mercy.
I don’t think anyone can do anything for you under the current circumstances.
My best advice: Change the circumstances.
Move your site somewhere else.
FYI: The cert expired more than one year ago…
What has he done for you in that time? ZERO
How much has he charged in that time?
[whatever that answer - it was too much]
He is volunteer, like me.
I’ve left another message. Let’s hope. Otherwise, I will create a new site, simple and easy to manage
Volunteer?
Can he “volunteer” some information?
yeah I hope so 