Unable to Upload files(csv) or perform any functions with the R shiny app

I have created a shiny app which will allow to upload a csv file , provide DB details to fetch data from hive/mongo DB. I am running the app using runApp("location",host="",port=7069,launch.browser = T). When I access the app from the same machine which is hosting the app, I am able to perform operations on the app. But when I try to access the app from another machine which is in the same network, I am able to access the app (able to open the app in the browser) but unable to perform the operations. Especially the upload of csv is not happening.
There is not data passing between the two computers. Can any one provide pointers on this?