@johnnyjohn28 said:
"The country or certification you are trying to add is not valid"
How couldn't I add the certification?
It just showed me a "The country or certification you are trying to add is not valid" label.
How can I fix it? Pls reply me as soon as possible!

It would help a lot if you let us know:

• Which Country
  
• What Certification

Country: Vietnam Certification: P, K, T13, T16, T18, C

@johnnyjohn28 said:
Country: Vietnam
Certification: P, K, T13, T16, T18, C

I don't see Vietnam in the list of Implemented Certifications.
I suggest you post your request in this thread.
https://www.themoviedb.org/talk/63b7df66f44f2700a020d6f4
https://www.themoviedb.org/talk/534413860e0a263a0200229b