First I'm going to explain how to do a graceful disconnect, which is a method you should do from now on, should you need to switch off/resync/reboot - in fact anything that involves a loss of sync.
use the following Disconnect method -
Log in to the Modem/Router, in the Internet box, click Disconnect to drop the PPP Internet session (this is not the sync), wait about a minute and then power down the Modem/Router. After about another minute you can unplug it from the line if you need to make any changes (configuration or otherwise) that involves powering up & rebooting the TG582n.
Do whatever is needed, but stay offline for at least 10 minutes. When you re-connect and power up, when it's booted, Login to the Modem/Router and click Connect to establish a new PPP Internet session.
(Don't do this more than 5 times in an hour, then leave it for the rest of the day). This method is to help stop the Exchange DLM from thinking your sync loss was a dropped connection.
OK, that's the method to use in future, now to some nitty gritty.
My interpretation of your posts to date is that your first concern is your son getting unauthorised access (when you aren't there to supervise) and then your second concern is the TG582n appearing not to retain settings after a power down. If that is not correct, please post back what your concerns are in order of importance.
The procedure I gave in reply #32 above will deal with the first concern, whatever settings the TG582n may retain or not. If it does not retain any changed settings at all then you will simply have to re-enter the new broadband password each time as it will have retained the old one, or the TR069 details which won't respond as you will have changed the settings at the member centre.
If for some reason you do not want to go down that route of reply #32 at the moment (please explain why) then just do the following -
Type 192.168.1.254 into your browser address bar.
At the bottom of the default landing page, select 5.4 >Advanced Options and login.
Now first, on the LH menu, select >Technicolor Gateway then >Configuration below that, then >Configure on the top RH side.
Under System Configuration, towards the bottom, select >Disabled from the drop down box for Web Browsing Interception: and click >Apply
(you will now no longer be direct to the modem/router home page if the connection drops for any reason).
Then
On the LH menu, now select >Broadband Connection and then in the middle of the screen > under Internet >View more.....
You should be on the Internet Overview page
Now click >Disconnect in the box. You should now see boxes with your Username and Password. Put the cursor in the Password box and delete the password. Below this box - untick the Remember Password box.
NOTE - this is your broadband password, not your TG582n login password.
You can now click Logout on the top RH side.
You should now be back on the "Landing page".
As a first check, select 5.4 Advanced options again, and login, and go to the same pages as above and check the boxes remain unticked and no password in the password box. If all is ok then logout.
Next step power down the modem/router, wait a minute and unplug it from the line.
Whilst it is unplugged from the line, power it up again, and when it has booted, put 192.168.1.254 in the address bar again and select 5.4 Advanced Options and login again.
Goto the same pages and see if the boxes remains unticked and the password box empty. Whilst you are logged in check and see if your wireless settings are as you previously set them.
Once you have done that, plug the line back in and when the Broadband light is stable, enter your broadband password in the password box and click Connect. When the Internet light is steady, logout of the TG582n.
Post back on here what the results were, and whether everything did as it should.
