If you have two accounts, we make it very easy to merge them. First log in to the account with the email address you want to be your primary.
Then, go to your account settings page, found by clicking the three bars in the top right of the screen when you're logged in.
You'll see an area where you can add another email address or phone number. Add the info from your second account, and we will send you a link to both email addresses confirming the merge.