Solved
Some sims are not able to use stairs? Sims 4 PC
Hello! I am at a loss! I purchased and downloaded "Growing Together" on release. I decided to have my sims try for baby and they are having twins. I want to stay in my current house but needed to ad...
It's the ceiling above the stairwell, it's too low. If you remove it your Sim will be able to go upstairs:
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