Problem with Unix-x64 sh file

Hello and thank you in advance for spending some time to read this.
For educational context, I have to use SNAP software. My OS is Ubuntu 16.04.
I’m trying to download the installer from esa webpage, but it seems like something is off. The page gets stuck, and I feel confused trying to figure out what the problem is.

It seems that your browser opens the file, instead of downloading it. Try clicking on the link and chose “Save target as” or however it is named in your browser. Afterwards you need to mark the script as executable and than you should be able to start the installer.

Thank you very much for your help!
The installation was successful!