What browser are you using? Can you please try to press CTRL-F5 on the about page to see if the version information loads successfully?

The Locator-S1 needs to have a clear view of the sky until the LED is not flashing any more before it is ready to dive. If the LED is blinking you will not get a position!
See explanation of the LED signals here: https://waterlinked.github.io/docs/locators/locator-s1/