Others can't join my server

Hey, I have a minecraft server, I'm hosting this server from my home pc, I dont have static public IP so, I made my local IP to static and registered a domain, then configured the domain trough cloudflare, also added the cloudflare nameservers to the domain, and did port forwarding, and for about one week I was able to run my server everyday and others was able to join with the custom IP but now if I start my server and check the server port on portchecktool.com it says connection timed out and its didn't see the service on the port, and others also get that when try to join the server, connection timed out, I only can join with my local address or with 127.0.0.1, I checked everything and there is nothing wrong, also tried with other ports but nothing happened idk where is the problem... please help! :/
 

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