Eizo ColorNavigator 6 and the Datacolor Spyder3 are both 32-bit and no longer supported in more recent or current versions of macOS (10.15 Catalina and later).
You can use either basICColor display 6 or basICColor display 6 Pro to perform hardware calibration of your Eizo CG241W monitor.
For a reasonably priced colorimeter, your best options are either the Calibrite
ColorChecker Display Pro or
ColorChecker Display Plus (formerly known as X-Rite i1Display Pro or i1Display Pro Plus and other names as OEM products).
You can also use a reasonably priced spectrometer like the Calibrite
ColorChecker Studio (formerly known as X-Rite ColorMunki Photo / Pantone ColorMunki Design / X-Rite 11Studio. All are the same instrument sold under different names with different branding and software).
Also, you should feel free to contact customer support at Eizo, basICCcolor, or Calibrite with questions. They're there to help you with their products.
https://www.eizo-apac.com/contact-ushttps://www.eizo-apac.com/support-service/tech-library/general-monitor-support-and-faq/support-mac-compatibility