Hi @debisschopk
there is a check of your domain, ~~45 minutes old - https://check-your-website.server-daten.de/?q=docportal.abfr.be#ct-logs
| Issuer | not before | not after | Domain names | LE-Duplicate | next LE |
|---|---|---|---|---|---|
| Let's Encrypt Authority X3 | 2019-09-27 | 2019-12-26 | docportal.abfr.be - 1 entries | duplicate nr. 5 | next Letsencrypt certificate: 2019-10-04 11:17:51 |
| Let's Encrypt Authority X3 | 2019-09-27 | 2019-12-26 | docportal.abfr.be - 1 entries | duplicate nr. 4 | |
| Let's Encrypt Authority X3 | 2019-09-27 | 2019-12-26 | docportal.abfr.be - 1 entries | duplicate nr. 3 | |
| Let's Encrypt Authority X3 | 2019-09-27 | 2019-12-26 | docportal.abfr.be - 1 entries | duplicate nr. 2 | |
| Let's Encrypt Authority X3 | 2019-09-27 | 2019-12-26 | docportal.abfr.be - 1 entries | duplicate nr. 1 |
5 identical certificates, that hits the limit.
Please read
Where are these certificates? Use one.