Can't access installed font after upgrade to

System: Mac OS 10.11.6. Several months ago I installed Math Magic which included a family of CenturyNew fonts in otf format. With my previous version of LibreOffice I was able to use the CenturyNew fonts in LibreOffice text documents saved in odf format. I can still access those documents AND the CenturyNew fonts with OpenOffice 4.0.0, but LibreOffice CANNOT access the CenturyNew fonts. I’d like to know why this is happening and whether there’s anything I can do that would allow the new version of LibreOffice to access the CenturyNew fonts as did its previous version.