Hey there,
I just found out that certificates and keys are stored in "/etc/ssl/private" and "/etc/ssl/certs".
But I have two questions:
1. Where is the list stored? OMV is still saying I have more certs but I removed old ones (created some more while debugging, but removed certs and keys afterwards)
2. Does the LetsEncrypt plugin actually move the certificates to this location? I have in mind that the certs are stored in "/etc/letsencrypt/live" but I had no time for further investigation
With best regards
LouBen3010