@TsukikoMumai Is it possible you bought all your packs through Steam? If so, you need to uninstall the EA App version of Sims 4 and install the Steam version, then download your packs through Steam.
Otherwise, it sounds like you may be signed into the wrong account. Please go to ea.com and sign in with the same email address you're using in the EA App. Open your profile page, click Order History, expand the timeline if necessary (it shows the last three months by default), and see whether you can find your purchases. This applies even if you bought codes from a third party and registered them in Origin or the EA App.
If your purchases don't show up, then this is not the correct account, and you'll need to figure out on which account you bought your packs. You can check any other email addresses you have access to for receipts or other correspondence from EA.
If you are in fact in the correct account, confirmed by the packs showing up in your purchase history, please contact EA customer support.
https://help.ea.com/en/contact-us/
Take screenshots of your purchase history, order numbers included, and attach them when you submit your request. Be sure to choose the live chat option; if you don't see it, switch the country in the browser window to U.S. or U.K., or choose a slightly different category of issue.
