Request Sysop rights

Hello, I'm not sure I understand your question: you don't need sysop right to translate; you don't need input methods to save what you typed. On Special:Translate the selector for the language is on top right, in case the wrong one is selected for you. You can also just go to portal:bcl or to this link to translate main MediaWiki extensions (which seems to be your purpose). Thanks for your translations and let us know if this doesn't work for you.