I have bought many products from CS over the years, and currently used their  757 III and 767 in P3DV5.4.    Love them!   I never knew there was a limit on activations.   Recently, I had some major issues with P3DV5.4, where I thought I had to reinstall the whole platform.   I uninstalled all of my add ons, including the CS 757 and 767.   I got P3DV5.4 working again. I tried to reinstall my CS 757 and 767, including all of the versions of the 757.   I cannot install, as it says I have reached my limit on activations.   The installer tells me I have to deactivate them first, to get a new activation.   I cannot do that, as they are uninstalled.   How can I get these wonderful aircraft reinstalled?   Please help!