Revert my cloudflare email DNS settings back to Titan Email, assistance please!

I seem to be able to send from parado@atomicrhino.net (the domain on cloudflare) and recieve some emails from certain places, but most seem to get blocked and I can't figure out why or how, so I just want to move it all back to hostinger/Titan mail, I'm needing to login to my universal credit account and update my moving details so I can start getting housing benefits so this is kind of urgent. any help greatly appreciated.
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