April 2018
I Have an underage account for some reason and: I've spent so much money on it and nearly purchased all the DLC items there are for The Sims on it because I was unaware I couldn't connect to the internet until I got Get Together. I was wondering: Is there any way that I that have an underage account could acquire the Free Happy Holiday Pack without downloading some shady file that might be a virus from 3 years ago, etc? I've contacted EA multiple times if I could move my games to a new account and nope so if I could get this Holiday pack it would make playing The Sims 4 on Christmas more enjoyable instead of making a DIY Christmas tree. Thanks!
-Aksel
April 2018
This sounds like it's an account issue and we can't help with those only EA's customer service can help with account problems.
However, you maybe able to create a new full account and ask them to merge your old account with the new account. You will want to contact Support to see if this is possible with your account.
How to update an EA Account to an adult account
https://help.ea.com/en-us/help/account/aging-up-an-origin-account-to-an-adult-account/
Merge Origin Accounts
https://answers.ea.com/t5/Technical-Issues/How-to-merge-two-origin-accounts/td-p/494856