Ionic App not running on ios/Android but working on browser - ionic-framework

Question

I developed an app that was working perfectly on Ionic DevApp on my iPhone. Suddenly it stopped working. I even tested a new blank app and it does not work. I tested on many wifi and 3G signals and also on an Android phone but it does not work!
On my iPhone I’m getting the following error:
Unable to load page. The request timed out.
On the Android phone I got this error:
error err_connection_timed_out.
I tried running the following, but none worked:
ionic serve
ionic serve -c
ionic serve -c --no-proxy
Running ionic info gives me:
Ionic:
ionic (Ionic CLI) : 4.5.0 (C:\Users\rodri\AppData\Roaming\npm\node_modules\ionic)
Ionic Framework : ionic-angular 3.9.2
#ionic/app-scripts : 3.2.0
Cordova:
cordova (Cordova CLI) : 8.1.2 (cordova-lib#8.1.1)
Cordova Platforms : android 7.1.2, ios 4.5.5
Cordova Plugins : cordova-plugin-ionic-keyboard 2.1.3, cordova-plugin-ionic-webview 2.2.3, (and 5 other plugins)
System:
NodeJS : v10.13.0 (C:\Program Files\nodejs\node.exe)
npm : 6.4.1
OS : Windows 10
EDIT:
I tried running ionic repair which gives me this error:
shell.js: internal error
Error: ETIMEDOUT: connection timed out, read
[ERROR] An error occurred while running subprocess cordova.
cordova prepare exited with exit code 1.

Answer 1

It was just a Firewall coming from McAfee Firewall blocking the port I needed. Just had to open the port on the McAfee app.