Trying to install, Firefox.
Trying to install Firefox, asked to install "app" on one more device. I do not have another device. I do not know what an "app" is. Please help me get this working.
Firefox is an "App" could you provide a screenshot? Thanks!
An App is a program. App is mostly used on cel phones and computer systems.
If you are talking about sync, sync is an option. Shut down sync from here.
Type about:accounts<enter> in the address bar.
Sync is optional. You can close the tab once you have created the Sync account if you do not want or can't add a mobile device.