End of January 2025 : Support for OSCP Stapling will end begin may 2025.

[Gertjan]

Make sure this :

is unchecked.
Checked means , after Mai 7, 2025 : renewal error.

Mail from Letsencrypt (2025-01-29) :

.....
The certificates for the hostnames below (issued by the Let's Encrypt account associated with this email address) use a feature called "OCSP Must Staple." We are ending our support for that feature (https://letsencrypt.org/2024/12/05/ending-ocsp), along with our support for OCSP in general, and replacing it with Certificate Revocation Lists (https://letsencrypt.org/2022/09/07/new-life-for-crls).

After May 7th, 2025, requests for certificates with "OCSP Must Staple" will fail.

To ensure your certificates continue to automatically renew, please change your ACME client configuration to not request OCSP Must Staple.
....