According to Elementor which uses Cloudflare enterprise, Cloudflare has blocked newportdental.sg which I have no idea on how to unblock. I can access my old site via the domain. I already deleted my DNS entries from cloudflare.
What feature, service or problem is this related to?
Your site is not using Cloudflare nor is your host. Should your host actually be using Cloudflare and believe there is an issue, then they would need to reach out to their contact.
You can’t create a ticket because your domain is not on Cloudflare. Your domain is using your provider’s service and they might be using Cloudflare, but if there is an issue with their integration, only they can clarify this with Cloudflare, as it is their account.