Unable To Log In Amazon Account

I am writing regarding my Amazon shopping account, which was temporarily locked today right after I changed my forgotten password. When I try to log in, I see a message stating that unusual activity has been detected on my account and that it has been locked temporarily, asking me to contact customer service for further assistance. However, I am currently unable to access my account at all. I had simply forgotten my password and went through the password reset process successfully. After changing the password, instead of being able to log in, I encountered this lockout notice. I am concerned because I need access to my account and there was no clear explanation of what specific activity triggered this security block. I kindly request that my Amazon shopping account be reviewed urgently and reactivated immediately so that I can log back in and continue using your services without interruption. I also ask that you inform me briefly of any steps I need to take, if any, to complete this reactivation.