User can not access app server using browser if it is started with server.startup command without using sudo or without root user

 I have installed IBM Collaborative Lifecycle management solution on RHEL 7.7 server. Command to start or stop app server is

server.startup and server.shutdown respectively

It is installed on nfs file system.
If server is started by root user or if a non root user start it using sudo i.e. sudo ./server.startup then user can access application server using browser but if server is started by non root user without using sudo i.e. ./server.startup then on console it is shown as server is started but it can not be accessed by browser.

What could I possibly be missing here because non root user can run server.startup command with or without sudo

I understand that in linux if process is binding to any port below 1024 root privileges are required but in my case I am not seeing any error related to port binding even if server.startup command is executed without sudo. Application server is running on port no 443