pro-part.com. 172800 IN NS ns1.netfirms.com.
pro-part.com. 172800 IN NS ns2.netfirms.com.
;; Received 118 bytes from 2001:502:1ca1::30#53(e.gtld-servers.net) in 28 ms
;; Received 41 bytes from 65.254.254.157#53(ns1.netfirms.com) in 108 ms
You have successfully removed the website from Cloudflare, everything else is now between you and Netfirms. As Netfirms is now both your host and nameserver provider, they should be able to help you.