Ok.

No.1: Appears that you own at least one card of a removed from sale model. Probably Alizee and or Priscilia Jones. Alizee's cards can still be downloaded if you already purchased them. Priscilia's, unfortunately not. Time to ask CS for a refund if you can't play the clips any more.

No.2: Make sure you have Advanced settings checked in the Settings area. Scroll down to Clips and check the Previw Push to never. That will stop any more ***** demo pushes.

Totem are already on the case for this one. To stop demos from playing, you can right click a playing clip and when the wheel menu opens, you can click on the checkmark to disable a demo. You may have to click it twice.

If you don't see this checkmark in the wheel menu, then you need to activate it in the Controls~ Contextual Menu part. In this menu, it's the last bit... Enable/Disable.

If I understand your next bit correctly, NO this part of the software will not be available forever but I hope the SOFTWARE will be available forever :)

No.3: As far as I know, no, you can't disable those functions as yet, only change them. Again, I'm guessing that it's interfering with other programs you have running at the same time as iStripper.

Might be good to let us, and more importantly, the Team know why this is a problem for you? The way I use the software doesn't affect me so much as I mainly use Fullscreen mode to view my cards and I've learned how to control most of this stuff over the last few years :)