I just purchased a (legitimate) code to get The Sims 3 Pets in Origin. The expansion pack downloaded and installed alright (even seemed to install The Sims 3 itself). However, it only seems to be installed in the Origins launcher, not locally on my computer. When I downloaded the Sims 4 trial it asked me where I wanted to store it, so I thought it would do the same with this one. I already have TS3 and World Adventures on my computer (installed from discs), so I would really like to know how to merge them with Pets.
@AbC1952a7529176 The software on the discs is dated and to add DLC to the game both the base game and expansion packs need to have Origin as DRM and the game needs to be version 1.69. The game should continue to play as is until you try to install new DLC.