I was struggling with the same issue when I was trying to change profiles via URL command. I ended up going into Blue Iris Settings > Web Server > Advanced (bottom of web server tab). Then I unchecked "Use Secure Session Keys and Login Page". The URL command works and the only difference I see when using UI3 is that a login pop-up appears instead of the login screen.Trying to figure this out, when I click "Test", PTZ camera does not move and a box pops up stating "received xxxxxx bytes".
When I paste the command in Chrome the UI login comes up, if I login then the camera moves.
Command entered in Chrome: 192.168.1.7:81/admin?camera=PTZ&preset=11&user=xxxx&pw=xxxx
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After login this appears and the camera moves.
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I found this through trial and error after playing with several settings, I *think* this was the one setting that made it work, but it could be a combination of something else I also did.
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