Could you please point this IP to my subdomain which is smshub.wesetall.com
IP- 103.241.136.228
I am not able to point it myself please help me to do this.
Custom DNS A records are not possible with InfinityFree. You may be able to use the CNAME records tool instead, if you have a domain name which points to that IP address already.
You can make a full setup at Cloudflare(add your domain and change nameservers). Then you can customize your DNS using Cloudflare DNS.