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. crt.sh | example.com), so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.
Thank you for your time.
I have tried to trace my steps but can't say just how I first obtained the certificate. Is there another way to approach the problem?
I've found a "renew" button. After I executed that, it responded that the certificate has been renewed. The screen which has the button looked different from the screen shot provided; but it seems to have done the job.
Do I need to upload the certificate again or do something more?
do you have screenshot of that page?
hmm I just noticed your site doesn't actually using LE certificate, but crt.sh | 4604888401
(this is precerificate of that) which doesn't expire until 2022 may 6
@jimrothgeb Adding on to what @orangepizza says, you have issued Lets Encrypt certs before but your most recent LE certs only have the name peekintothepast.com and do not include the www. version.
See: crt.sh | peekintothepast.com
But, agree your server is sending out the cert from Starfield Tech which includes both the apex (bare) domain and the www name.