Brawl Stars Email Change Error - Code Not Received

I'm trying to change the email address associated with my Brawl Stars account, but I'm not receiving the verification code. I’ve checked all my email inboxes, but the code still isn’t coming through. The code appears when I log into the game, but not when I attempt to change my email.

My cousin is frequently logging in, which is why I need to change the email address. I would appreciate your urgent assistance in resolving this issue, as it’s crucial for me to update my account details. Thank you for your help.