I am developing a Flutter app which sends http requests to my express.js rest api which runs on my server. It was working fine until yesterday when out of the blue it stopped working. All the request made to that api only from my network timeout regardless of the device.

Postman gives: Error: Request timed out.
this website gives: Operation timeout error code 10028.
this website works fine.

Any help is appreciated,
thanks in advance.

Not: Server has no ssl sertificate