Is it there werent or there wasnt?

Clarification on Using "wasn’t" and "weren’t"

If you know it wasn’t, then it should be “wasn’t,” indicative mood. If the supposition is hypothetical, that is, you don’t know but you think it might not have been, then it should be “weren’t,” subjunctive mood.

Usage of "wasn’t" and "weren’t"

The simple answer to your other confusion is that you use "wasn’t any" with uncountable nouns and "weren’t any" with countable nouns.

Family Link for Supervision of Teenagers

Yes, Family Link can be used to supervise teenagers (children over the age of 13 or applicable age of consent in your country).

Changing Age on Google Account

Edit your child’s Google Account info by:

1. Open the Family Link app.
2. Select your child.
3. On the "Settings" card, tap Manage settings. Account info.
4. In the top right, tap Edit.
5. Make changes to your child’s account.
6. In the top right, tap Save.

Minimum Age Requirement for Google Account

Google currently prohibits children 12 and under from creating a Google account by implementing an age neutral verification mechanism in the account creation process and using cookies to ensure that children cannot bypass the age screen on a subsequent try.