Birthdays not showing up

Product: The Sims 4
Platform:PC
Which language are you playing the game in? English
How often does the bug occur? Every time (100%)
What is your current game version number? 1.54.120.1020
What expansions, game packs, and stuff packs do you have installed? Seasons and Get Famous
Steps: How can we find the bug ourselves? when opening calendar or going to the sims simology the birthdays should show up or the days till age up shloud but neither does.
What happens when the bug occurs? I was looking to see in how many days my sims will age up and it didn't show. Also in the calendar it didn't show any sims birthdays.
What do you expect to see? I just want to see when i have t age up my sims.
Have you installed any customization with the game, e.g. Custom Content or Mods? Yes
Did this issue appear after a specific patch or change you made to your system? Yes
Please describe the patch or change you made. I changed the season length from 7 days to 14 days.

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I have tried to repair the game trough Origin but it still didn't work. even though I changed the length of a season in a save file in other save files the seasons are still 7 days but the birthdays are still not showing up. I also have disabled all my CC and mods and it still doesn't work. I don't know if it is a bug but can anyone help me ?