Hello & Welcome to Just Answer,
Sorry I didn't see your question earlier and to hear of any issue you are having with your device.
To help you with this issue, may I ask:
1) Have you connected the device IN YOUR VEHICLE yet, using the Vehicle Power Adapter?
I only ask because these devices have a very small capacity internal battery, and they are intended to be run MOSTLY when connected to the power in your vehicle.
2) When you turned it on for the first time, how long did it stay on, before you shut it off OR it turned off itself? Again, I only ask because of the SMALL capacity of the internal battery (specifications say it will last only about 30 minutes when fully charged).
As for the "web address" you mentioned above, that actually looks like an EMAIL address.
And when you mentioned putting that account number in the "subject line", that sounds like an EMAIL function too. So I believe that person was trying to have you register the device VIA EMAIL.
So if you were/are trying to register your device via email, I would recommend composing an email with that "address" in the "TO:" field, and the Acct# ***** in the "Subject:" field, and also a brief note in the BODY of the email (blank emails are not good and sometimes mistaken for email spam).
The Body should say something like:
"I'm trying to register my Roadmate 9055LM with this email. Please REPLY when you receive this note, so that I know you have it. Thank You"
Now back to the unit NOT turning on a second time. I suspect that the internal battery MAY not have been charged up fully (recommended initial charge time is AT LEAST TWO HOURS - using an optional AC Power adapter OR the Vehicle Power Adapter), and therefore would not power up again.
So I recommend that you DO connect the device IN your vehicle, making sure that the Vehicle power adapter is getting power from whatever power outlet you have it connected to, and leave it connected for AT LEAST AN HOUR or TWO, and then try to turn the device ON again.
If the device DOES come on, then you should be OK to continue to use the device.
NOTE: SOME vehicles MUST have the ignition turned ON to supply power to the power outlet.
One other IMPORTANT ITEM: Almost ALL GPS units do NOT need to be "registered" to operate properly. That is because most of these unit are "ready to operate" (once charged) - right out of the box.
So please try:
1) Sending that EMAIL I mentioned above, and
2) also try connecting your device to power for AT LEAST an hour or two, and then try to turn it ON - to see if a low charged battery is the issue.
Please let me know what happens when you try these things, or if you have any more questions.
If this works to get your device running and has answered your question(s), please take a moment to rate MY service level (Excellent is my goal) so that I get credit for helping you with this question.
You should see some "smiley faces" or "stars" to do that, but please let me know if you do NOT see them (you may have to scroll UP or DOWN) or can not use them.
Thanks, ***** *****