ZM_OPT_USE_LEGACY_API_AUTH
Starting version 1.34.0, ZoneMinder uses a more secure Authentication mechanism using JWT tokens. Older versions used a less secure MD5 based auth hash. It is recommended you turn this off after you are sure you don't need it. If you are using a 3rd party app that relies on the older API auth mechanisms, you will have to update that app if you turn this off. Note that zmNinja 1.3.057 onwards supports the new token system