Hi friend!
I understand your problem is that you want to open the HiLink app via Firefox.
You can set Firefox as the default browser by opening App Settings from the Windows 10 Start menu:
1. On the Start menu, tap the Settings icon.
2. Click Apply and then select the default application in the left panel.
3. Locate and click the web browser.

4. Click the Firefox item in the dialog box.

Firefox is now your default browser. Close the Settings window to save your changes.
Then try restarting HiLink application.
Thanks!