Brawl Stars "We couldn't verify that you're the rightful account owner" Error Recovery Request

A month ago, my Brawl Stars journey came to an abrupt halt as my account was locked without warning or explanation. Since then, I've been trapped in a frustrating cycle of following instructions, answering questions, and providing verification, all to no avail.

Despite my diligent efforts, the account remains inaccessible, with the constant response: "We couldn't verify that you're the rightful account owner." I've provided every piece of information requested, including invoices and detailed answers to their inquiries, yet the issue persists.