I seem to be able to access services without the key set up correctly

First: I`m not very experienced but I roughly understand the interaction between Services and the DashMediaPlayer Module so I hope i make no mistake here.
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Dash Media Player
Services 2.2

Ok I did set up the DasPlayer as described in the manual and it seemed to work exept the still images of the video where missing in the playlist (but where there in the main part of the video).

So I messed around with settings and stuff to get it working.

I then ended up changing the name of my DashVideo content type from Video to DashVideo (cause I installed the Video-Module and did want to avoid provlems of those 2 modules interacting).

I did some other stuff like deleting that content type and all content and recreate it from scratch and so on.
After this Still images in the playlist still did not work and I could play the video as before.

But then while trying around again I found only OPERA is able to play the video, so I did play around a bit with the settings and rights of the Services Module.

I found IE is not playing ANY video at all but OPERA is playing it EVEN WHEN IT SCHOULD NOT BE ABLE TO!
When I disable ALL services that are allowed in the key Dash ANYWAY can play the video! But for my understanding it should not be able since it needs to get it from drupal authenticated by the Services module (that has no services allowed now in the key).