If you have 2 browsers or more, click the - "What's my password?" button using both bowsers, because the password for different browsers is different.
Another option is, make two copies of this page, one on your disk and one to upload.
Then if you change your browser, you can always click the Whats my password button on the file which is stored in your disk, because you'll obviously remove the What's my password? button for the uploaded file.
Note that the password may also change sometimes if you don't change your bowser, so opt for the second one, storing one copy is better.