Sims 3 custom content still not working?

I know i ask a question like this this a while ago but i don't think i was very clear. Sims 3 custom content will not work. when i download it it shows as a RAR file.when it worked and went onto the game it showed up as a zip file and i would extract it and then it was on my game. i really need help someone suggested a Sims 3 pets cc fixer but i don't have pets.Oh and store cc does work but that's it.

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