Urgent: Duplicate NS1 zone conflict killing email for markitsigns.ca

My domain markitsigns.ca has been experiencing complete email failure due to a duplicate NS1 zone conflict. I have an active p09 zone with correct MX records, but an old inactive p01 zone (leftover from a previous Wix setup) is intercepting DNS queries and returning no MX records.

Netlify support previously confirmed this is a known duplicate zone issue. I need the old p01 zone for markitsigns.ca deleted urgently — this is causing complete email failure for my business and customers cannot reach me.

Site: dapper-twilight-65a893.netlify.app
Domain: markitsigns.ca
Account email: amanda@markitsigns.ca

UPDATE: The same duplicate zone conflict is now also causing the website to intermittently show an old Wix page for some visitors. Both email and website are being affected by the p01 zone. This is actively impacting my business.