Connection Failed 0:66003S:4688822970:0B + Unable to Submit Support Ticket

Hello,

I’m getting a connection error when trying to launch the game BF6. The message says:
"Connection Failed – Unable to connect to the EA servers. Please check your Internet connection, make sure the Platform Client is online and try again."
Error code: 0:66003S:4688822970:0B
My internet connection is working properly. Other online services and games connect without any issues. I have already tried:
Restarting the game
Restarting the PC
Restarting the router
Checking that the EA App is online

The issue still persists.

Additionally, I’m unable to create a support ticket on the EA Help website. After I fill out the form and press Submit, the ticket does not appear in my case history. It looks like the submission is not being registered.

Could you please advise:

What this specific error code means
How to resolve the connection issue
Why support tickets are not being created in my account

Thank you.