I am getting too many emails from seeking alpha at an email address that is not in my profile.

I then went into my profile to change my email address to the address that is getting all the email from seeking alpha (thinking I could let the system know I did not want email at that address).  However, I received a message saying that that particular email address is already taken.  Can someone please look into this?  SA may have got my other email address from when I looked up SA on my phone (first time I pulled up SA on my phone was not in the app, I don't believe).  I still routinely use the SA app on my phone.