Yea I went through the manual and it doesn't seem to be designed for the FLX S, so that its available for the Watch thingy is kinda not right, at least for the FLX S.
I saw Highlight working tho.
But yea after clearing the programmer we weren't able to get the fixtures working again, besides the one selected throu Rem Dim. Idk, maybe that's just an individual problem or so.
Solved it by basically not allowing my friend to use Rem Dim anymore, works fantastic.
Thanks again to you all.