Question: Not getting emails about account changes

I tried to change my email on my account, and got a message that an email was sent to confirm, but never got an email.
I may have more than one account, because I tried to change my user name, but I can't log onto that account so I tried password reset, and the same thing. I got a message that an email was sent, but I haven't received that either.

I'm logged in now, but I suspect I won't be able to get back in.

my email is mgmcderm@gmail.com

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