Weekly Help and Discussion Thread for the week of December 28, 2020

So I just logged in to check my e-mail to find a few amazon.de emails regarding purchases. I was confused and shocked, I haven't used amazon in a long time, never used the german one (I'm Portuguese). First thing I did was check my bank account and everything was ok. Can someone help me or explain to me what this is? I've managed to log into the account after resseting the password and translating the page from german to english, there's an open order for a 850 euro watch, a few closed ones. Why is my email being used? I don't want to do anything that can compromise me or anyone else but I'm completely lost. A couple of the e-mails are about cancelled payments or purchases due to not using a credit card? I'm not sure what this all means, I'm sorry if this isn't the place to ask or I'm in the wrong subrredit but I'm quite confused and hope someone can help.

/r/amazon Thread