I've entered my birthdate wrong

You must be 13+ to use LIV Hub.  If you've entered the birth date wrong, please submit a ticket with your meta username and proof that you're over the minimum age.  You may need to get your parent's permission.

Do note that you will not be able to stream via socials if you are not over the minimum age requirements of each platform.  LIV does not bypass those requirements so even if you lie on LIV, you won't be able to stream.

YouTube minimum age to stream is 16 without a parent visible on Stream

https://support.google.com/youtube/answer/2474026?hl=en&co=GENIE.Platform%3DAndroid

As of July 22, we are increasing the minimum age required to live stream to 16 years old. This means that creators will need to be 16 or older to be able to live stream on YouTube. Additionally, live streams featuring 13-15 year olds who are not visibly accompanied by an adult may have their live chat disabled and the account may temporarily lose access to live chat or other features. Please note that, in the future, we plan to take down these live streams and the account may temporarily lose its ability to live stream.

Twitch 

https://legal.twitch.com/en/legal/terms-of-service/

You promise us that you are at least 13 years old, that you have not previously been removed from Twitch, and that you are not legally prohibited from using Twitch.

If you are between 13 and the age you legally become an adult where you live, you can only use Twitch if your parent or guardian is supervising you and agrees to this contract.