What´s the exact error message you´re getting when you try to play?
Have you been banned or does your PSN account have underage restrictions?
If not, please read these articles and try every mentioned step:
https://help.ea.com/en-us/help/faq/connection-troubleshooting-basic/
https://help.ea.com/en-us/help/console/connection-troubleshooting-advanced-playstation/
Good luck 🙂
Then the problem might not be on your side:
https://help.ea.com/en/battlefield/battlefield-1/
http://downdetector.com/status/ea
That´s where you can see EA´s server status.
But it´s very unusual that it lasts several days.
