Hey daDr00,
Just updated my iphone on Tmobile as well and am having some problems connecting to one of the cameras I use, through the remote access.
Upon first updating to 10.3 I started up the My Dlink Lite app and went to view through remote, picked the camera and the screen turned completely black and sent me back to my phones home screen.
Then I tried to view another camera I use through MDL remote view and it was working.
Powered my phone off and on, now it just loops the loading icon and times out on remote view through MDL and I cant view either of the cameras through remote now.
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We're Putting out a report to HQ currently. I'm gonna mess around with it more tomorrow and see if its behaving the same.