OK I found it - Gmelius.  

So I downloaded the extension, clicked the option to restore old compose, reloaded Gmail, and my mxhero/ icon in the compose window disappeared !!!

Looked all through Chrome store but could not find this "Restore Gmail Compose Window BETA"  -  could you possibly provide a link?

Are you Marcelo?

You tell me.

Have not yet received the invite - now is good.

I'm on - meeting ID  486-295-501.  What do I do now?

OK, It worked.  I'm on GTM now.  How do I connect with you?

Not sure I know what you mean by that.  Currently I'm at my firm's office which generally blocks online access.  Let me know exactly what you mean by 'online meeting' so I can review with our IT people.

Nope.  Still no 'update extensions'.   However myHero Toolbox is listed as 2.2.0

My Chrome / Settings / Extensions has no 'update extensions' anywhere.   However just 30 mins ago, I removed Toolbox and re-downloaded but still not Icons.