I keep getting responses from the Homestead Community to posts that I never made.

For the past few weeks I've been receiving responses from the Community to posts that I never made. I haven't posted anything to the Homestead Community in a long while. 

I'm really not sure how this is happening. The responses do have my Community Display Name.  Is it possible that someone else in the Community is using the same display name? Doesn't seem likely. Software glitch?

Should I edit my Community Display Name? If so, how do I edit/change it?

Please advise.

Thanks.