Mine's playing hide and seek again tonight. 
It'll show back up soon, no doubt.
Edit: Sure enough, it's back.
I went to the Settings page on the My Account site (I had to manually type the address as the Settings tab wasn't there), and there was no VDS control. I had to do something away from the computer for a little over an hour and I forgot to close the page before stepping away. When I returned to the computer I refreshed the page and the control was there. The Settings tab still isn't there, but I'm sure if I closed and re-opened my browser it would be. I closed and re-started the Usage Meter and Video Settings is now there. 
Edit 2: Sure enough, the Settings tab was there after closing, then re-opening the browser.
I think that, from now on, I'm going to wait for an hour or so after I first notice the VDS control not being there and subsequently power cycling the modem, as a few times now I've seen it pop back up a short time afterward. With that said, though, I don't know for sure that power cycling the modem has anything to do with bringing it back. It could just be a coincidence. Again, though, from now on I'll wait for that time just to give it a chance.
Sure. I first noticed that it was missing shortly after I turned my computer on at about 1:30AM. Shortly thereafter I restarted my modem, but to no avail. This was with checking the Usage Meter and seeing that there was no Settings tab on the My Account site. I then went to the Settings page on the My Account site at 1:43AM, according to the Chrome history, by manually changing the last part of the My Account site Usage page URL to "Settings", and though the page opened just fine the control wasn't there. It said something like I'm not authorized at this time to have the control. I really wish I would have gotten a screenshot. I'll remember to if it happens again. After doing other things, including being away from my computer for a few minutes at a time, I refreshed the Settings page at 2:59AM, according to the Chrome history, which had been open since I first went there, and the control was there.
These times are in EST.
-- Computer Logon around 1:30AM. Modem plug in was probably about five or ten minutes before that.
-- Checked Usage Meter around 1:35AM or so. No VDS, and no Settings tab on the My Account page.
-- Manually got to Settings page at 1:43AM. No control there, though the page loaded just fine.
-- Refreshed still open Settings page at 2:59AM, and control was then there.
Hope this helps.
You're quite welcome. I'm happy to help.
