Please update your firefox, you are using a version that is very old and out of date. If you don't want to use Sync, that's no problem, just dismiss any messages.

Can you attach a screenshot?

• http://en.wikipedia.org/wiki/Screenshot
• https://support.mozilla.org/kb/how-do-i-create-screenshot-my-problem

• Use a compressed image type like PNG or JPG to save the screenshot
• Make sure that you do not exceed the maximum size of 1 MB

Is this about the (home) page that opens if you start Firefox?

You can find the home page setting here:

• Tools > Options > General > Startup: Home page
• https://support.mozilla.org/kb/How+to+set+the+home+page

Firefox supports multiple home pages separated by '|' (pipe) symbols.

doubledbarf said

If I wanted to sync everything, I'd do it. I don't need my browser telling me every time I open it that I need to sync. Either you tell me how to turn that function off or you lose me altogether.

I'll just drop firefox as a browser if every time I open it I have to go through the same process of screens demanding I log in to sync.