The cert you obtained is working fine. But it is only valid for https://votepriforce.com and not https://www.votepriforce.com. So anyone who goes to the www version of the URL will get a certificate error.
The document you linked implies the docker image doesn't really support getting a certificate for more than one name even though that is possible to do with Let's Encrypt. You might submit an issue to the wiki.js developers to allow for that feature if you wish to make both names work.
I think you would just trade one set of problems for another. But I am guessing as I do not have direct experience with wiki.js (still, an educated guess).
I don't know why some browsers would work and others not. I always see the votepriforce.com working and the www.votepriforce.com always failing (due to not having www name in cert). So, as long as people only use votepriforce.com it should be fine.
Below is my Firefox screen. Note the padlock and I saw your home page just fine. Are you able to upload a snapshot of the error you see? Or, just describe the error message? Maybe we are talking about two different problems.
This is the problem visitors are experiencing unfortunately. I will make a snapshot of the site and try it again under www. Thanks Mike for looking into this.
If you can even just describe the exact error message that would be helpful. There are many reasons why things "don't work". If there is not a big error message on the screen they may have to click the icon where the padlock should be to see the message.
I have another question ... did you run certbot yourself? Or, did you let wiki.js run it for you? If you ran it yourself, can you show the command you used?
