Problems with the GooglePlayGames namespace or what to do with the Native library?

Question

C++ / C#

There is a problem. In the customer's project, for some reason, he does not see the GooglePlayGames.Native library. I reinstalled this pack, the problem still remains. Can you tell me if this library was removed or replaced? It's just that GooglePlayPlatform is tied to it, and this situation irritates me wildly.

Ошибка:Assets/GooglePlayGames/BasicApi/SavedGame/ISavedGameClient.cs(21,27): error CS0234: The type or namespace name `Native' does not exist in the namespace `GooglePlayGames'. Are you missing an assembly reference?