7D Mark II and Generic Ring Flash Problem

[Spassvogel]

I purchased a Timack Ring Flash.  This seems to be a generic ring flash that is sold under several different names  (Timack, McoPlus, SeresRoad, etc).  It claims to have a "standard" hot shoe interface and has a huge list of compatible cameras. 

I cannot for the life of me get the thing to function like a flash on my 7D Mark II.  It's not a TTL flash, it's just a manual flash, but other than the Flash "Enable/Disable" in the menu there doesn't seem to be any other setting to tell the camera to fire the flash. 

Is there something I'm missing? 

When the flash unit is on the hot-shoe, the internal flash settings are not available, so the camera knows there's something on the hot shoe.  As for the external flash settings, I get the screen that says thta the external flash settings are not available either.  I assumed this was because it was a "dumb" flash that had no programming available on the camera side.  I just want the stupid thing to fire when I push the button. 

Any ideas?

Thanks!

[Spassvogel]

They work on seemingly every other Canon camera.  That's the wacky part. 

[jrhoffman75]

Do you have access to another camera? If you can make it work on that one compare every setting related to flash. 

Also, do you have a Canon hot shoe flash that you can verify works on your 7D?