I recreated a family for Sims 4 I was playing in Sims 3, because I'm finally tired of all the bugs and crashing and everything bogging down with 3... so, I created a couple with a toddler... No problem, until I move them into their home. The toddler instantly ages up to child.
I am not using any custom content or mods at all. In fact, this is a clean install on a brand new computer, and I'm getting this issue. Please help, I'm at my wits' end, and I really don't want to miss this sim's baby stage. Toddlers are so dang cute, plus, I don't want my little girl to start life with a "Sad" moodlet because I missed her birthday (Not my fault!!)
So you didn't move over any user files ? Have you tried repairing your game through Origin ?
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