So, after reading a little bit, I discovered that there might be some problems with store content, and patch 1.67.
Then I came across this: http://www.tesguides.com/blog/2018/...for-the-sims-3/

It says that I have to unzip the contents, I should use 7-zip to extract the file, right?

It's not so much that there are 1.67-speific problems with store content, it's just that EA stopped providing the content patch by way of the Launcher which is how 1.67 players used to get it. So some helpful players like the one being linked to decided to offer it up a different way for players to access.

Yes, the file needs to be decompressed (unzipped), but it doesn't matter if you use your own operating system's commands to do that or a third party utility like 7-zip.