The crash reporter uses an entry in Firefox' application.ini file to specify the URL crashes should be submitted to:

https://searchfox.org/mozilla-central/rev/353f334d13359f7cb879b3cb38a94294231c2aa8/build/application.ini.in#50

The default value of this entry points to an old URL, the current one is https://crash-stats.mozilla.org and should be updated.

Additionally we should remove the breakpad.reportURL preference because it's not used anymore:

https://searchfox.org/mozilla-central/rev/353f334d13359f7cb879b3cb38a94294231c2aa8/browser/app/profile/firefox.js#1034
https://searchfox.org/mozilla-central/rev/353f334d13359f7cb879b3cb38a94294231c2aa8/mobile/android/app/mobile.js#332

It's referenced in multiple places and some code assumes that if it's set then crash reporting is properly configured, but it's not actually used by the crash reporting code.

Comment 0 is not correct. We're still using breakpad.reportURL but only to populate things like about:crashes links. It would make sense to generate both from the same URL instead of having two separate ones.

Meh, I mixed up the crash-stats and crash-reports URLs which are really two different things and should not be merged. Closing this as invalid.