While EA rarely bans players for using DLC unlockers on offline games, there is always a minor structural risk when modifying files connected to an active EA account. Step-by-Step: How to Use the Sims 4 Updater

The updater checks the current version of your Game/Bin/TS4_x64.exe against the latest official patch payload deployed by Electronic Arts (EA).

Users could simply select their game folder, click a button, and the Updater would automatically handle the rest, including verifying installed expansions and adding missing content.

However, its functionality depends entirely on the creators updating the tool itself. Whenever EA releases a new patch, the updater developer must upload the new files to their servers. If the developer abandons the project, the updater stops working. Risks and Safety Concerns

If you are using a community-maintained updater or unlocker and your packs are failing to appear, verify these common friction points: How to update the Sims 4 | All Packs and Kits

Mod management is another aspect. Many players use mods, but EA doesn't officially support them. The updater might disable mods during updates or there could be conflicts. How does the updater handle that?