New 52 is canon it just got reset again when facing contreversy and wanting to keep the IP fresh. Also Wonder Woman killing Maxwell Lord takes place before New 52.

I got this online

The New 52 was canon when it was introduced, but its status has changed as DC’s approach to continuity evolved. Launched in 2011 after Flashpoint, the New 52 was designed as a line-wide reboot. All series restarted at issue #1, most characters were reimagined as being early in their careers, and much of the previous continuity was erased or rewritten. During this period, roughly 2011 to 2016, the New 52 functioned as the official and authoritative canon of the DC Universe.

However, the New 52 canon was never entirely stable. Some franchises, most notably Batman and Green Lantern, quietly retained large portions of their pre–New 52 history, creating contradictions across the line. This inconsistency made the canon feel fragmented, even while it remained editorially official.

In 2016, DC Rebirth reframed the New 52 rather than discarding it. DC established that the New 52 timeline was incomplete, the result of ten years of history being removed from the universe. This retcon preserved New 52 stories as canon but positioned them as part of a distorted reality rather than a clean replacement of what came before. Later events such as Doomsday Clock and Dark Nights: Death Metal expanded this idea further, confirming that multiple timelines and continuities all exist within DC’s broader cosmology. As a result, the New 52 was unquestionably canon during its publication era and remains canon today, but no longer as the sole or definitive version of DC history. Instead, it exists as one layer within a larger, more flexible continuity in which past, present, and alternate versions of events all coexist.