If the web-browser doesn't open, try "force-stopping" it from the Settings:
Select an application from the list -> Tap on Force stop
Note: The steps described above may vary from one device manufacturer to another.
Press the two-overlaid-rectangle button (or the square button, or rectangular), to access the recent apps list -> tap the X icon or swipe right or left over the browser you want to close
If you want to close all applications at the same time, tap the round button with three parallel lines.
If you don’t receive the email in the next 2 minutes please check your junk folder, and add [email protected] to your safe sender list.