A new minor update by the build id of 2964270 has been just released on Steam for Crash Bandicoot N. Sane Trilogy, which fixes the long-standing issue of Cloud Save. The issue was with the incorrectly assigned cloud save parameters on the CREM folder, a non-existent folder in the AppData directory, including the game save’s name “ALCHEMYXSAVE_.sav” in the GAME folder. This update changed the game’s save directory and cloud save to a folder named “Crash Bandicoot(TM) N. Sane Trilogy” with the save files name format now named “SAVE_.sav” to match the cloud save.

If you have any other issues with the game, you can contact Activision’s Support team and if you want, make a thread on Steam.

Source: SteamDB