Unable to access https despite having valid certificates

Hi @Derrick250

you use certonly, so your server isn't restartet and your configuration isn't changed.

Checking your configuration - https://check-your-website.server-daten.de/?q=kobocollect.com#ct-logs

Issuer not before not after Domain names LE-Duplicate next LE
Let's Encrypt Authority X3 2020-02-02 2020-05-02 *.kobocollect.com, kobocollect.com - 2 entries duplicate nr. 2
Let's Encrypt Authority X3 2020-02-02 2020-05-02 *.kobocollect.com, kobocollect.com - 2 entries duplicate nr. 1

You have created two identical certificates, that has worked.

But you use a certificate with another set of domain names:

CN=kf.kobocollect.com
	03.11.2019
	01.02.2020
1 days expired	
ee.kobocollect.com, kc.kobocollect.com, kf.kobocollect.com - 3 entries

So a simple restart of your server may not work.

You have to change the file names manual in your nginx server block.