After reading through the above sections and before e-mailing the OpenLDAP lists, you might want to try out some of the following to track down the cause of your problems:
- Loglevel 256 is generally a good first loglevel to try for getting information useful to list members on issues
- Running slapd -d -1 can often track down fairly simple issues, such as missing schemas and incorrect file permissions for the slapd user to things like certs
- Check your logs for errors, as discussed at https://www.openldap.org/faq/data/cache/358.html