I would like to know if the fact of enabling EMAIL ROUTING at Clouflare for [email protected] could be a source of conflict? I ask this because I have no idea why messages would give priority to Cloudflare if I have already created the same email address at my hosting provider. This is why I hesitate to enable EMAIL ROUTING.
Cloudflare Email Routing forwards domain email addresses to mailboxes at other domains. If that is not your intention, don’t enable it. Instead, just configure the appropriate MX records to those of your hosting provider.