Try changing your base to just "dc=company,dc=com" so your search covers both People and Groups. Groups and People are at the same level based on your notes so setting the base to People you can't find the groups in your query. Restriction to the group you want to use is based on the "Allow list" entry in your Authentication Profile - just like you have it. Not sure if your login attribute should be sAMAccountName or uid though. Depends on what designates the user logon id in your ldap setup.
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