Ah, I just edited the key, and on that page I revoked it with no problem!
I think this is a bug on the version page.
I click on "Revoke" on a product key, but the red text does not show up immediately. Does this only appear after some time? I can keep "revoking" the same key (which of course I tried a second time, because there was no visual feedfack to my first attempt).
Some explanatory text and/or visual feedback on the page would be very helpful.
Ah, I just edited the key, and on that page I revoked it with no problem!
I think this is a bug on the version page.
Ok, got to the bottom of this - that red x is to delete the key, not revoke it.
There is a problem, though - when I edit the key, then on that page, when I try to delete it, I see the message that I can't, because it's a free account (I'm evaluating, btw, probably going to purchase - is a free account the best way to that?).
But when I try to delete a key in the grid, there is no message, and thus I keep on trying to delete.
So, when a user tries to delete in the grid, it should show the same message
You're right, the error messages weren't being shown on the dashboard (and a few other pages). We've fixed that.
Thanks for reporting this.