I am able to install data prep successfully. data prep service is running but when try to access portal it hung.
Please see attached screenshot for more details.
Tried to increase the Xmx to 8 GB still same issue
Which version are you running? 2.0 or 2.1?
Can you send the log and configuration files (respectively data/logs/app.log and config/application.properties)?
My first guess would be "public.ip in application.properties is not properly set".