Since your device was lost or stolen, to keep your information safe, you should change your { -product-firefox-account } password in your account settings. You should also look for information from your device manufacturer about erasing your data remotely.
Gan bod eich dyfais wedi cael ei cholli neu ei dwyn, i cadwch eich manylion yn ddiogel, dylech newid eich cyfrinair { -product-firefox-account } yn eich gosodiadau cyfrif. Dylech hefyd edrych am wybodaeth o'ch gwneuthurwr dyfeisiau ynglŷn â dileu eich data o bell.