After buying a free pack….

Hey, so I got the free pack of country kitchen appliances and after I let it download and restart my sims and get ready to build, all of my custom content is gone. Like everything is gone except the clothes for the sims and the mods, but just the builds of decor and everything else. I already tried the repair the Sims 4 app, but it still doesn’t work. So, is there any possibility that you can fix this issue or is there any way to get rid of having this free pack? If so, that will be great. Thank you