Unfortunately, I just discovered a bug in the CoinOpRegistry where your entry may not have been saved.
You should have received a confirmation email for every machine you put in (unless you submitted the serial number information anonymously).
If the email does not contain the make and model of the machine that you added then the machine did not get inserted into the database.
If it is not too much trouble could you please re-enter the machines.
If you are not sure if your machine was inserted into the Coin Op registry then click on the "View/Edit your entries" link.
Once you enter your username/email and password you can see which machines you entered.
Again, I apologize for the inconvenience.
Dave