Your Website works fine over HTTPS (non-www redirected 301 to www), despite domain nameservers aren’t pointed to Cloudflare yet. If you want to use Cloudflare for your domain, you have to change them at your domain registrar.
Currently below ones are active:
;; ANSWER SECTION:
innventa.com.mx. 0 IN NS ns3.interplanet.com.mx.
innventa.com.mx. 0 IN NS ns2.interplanet.com.mx.
innventa.com.mx. 0 IN NS ns1.interplanet.com.mx.
However, seems like there are some other issues non-related to the Cloudflare, at the origin host/server with the database connection for your WordPress instance: