You can get your free 50GB via the Globe One App or the Modem Dashboard.
Via the Globe One App:
Step 1: Plug-in your modem connect to your modem via WiFi
Step 2: Download the New GlobeOne app on the Play Store or the App Store.
Step 3: Open the app to view your 10GB. It may take up to 15 minutes after turning on your modem for the 50GB to be sent to your Home Prepaid WiFi. If not seen within 15 minutes, proceed to claiming via the Modem Dashboard
Via the Modem Dashboard App:
Step 1: Plug in and connect to your modem via WiFi
Step 2: Visit http://192.168.254.254/ to access the modem dashboard
Step 3: Click log-in on the upper right of the screen
Step 4: Enter user & password found at the back of the modem
Step 5: Go to the SMS tab inside the modem dashboard and create a new message
Step 6: Text the keyword FREEFAMSURF299 and send to 8080
Step 7: Wait for an SMS confirmation