Request for Assistance with Custom IP Address for DNS

I am having with my domain’s DNS. I am currently using a free plan with No-IP and have set up a subdomain to use as the target for an NS record. I have also set up a CNAME and SRV record using the NS record as the target.

However, I have been experiencing issues with the DNS propagation and have been waiting for more than 48 hours for the changes to take effect. I have checked my DNS settings and believe that everything is correct, but I have not received any notification from Cloudflare about any errors.

I would greatly appreciate any assistance you can provide with resolving this issue. If necessary, I can provide additional information or screenshots of my DNS settings.