AR Scavenger issue with recognizing picture

Hey!

Thanks for this amazing H5P. I would like also to thank the community behind it who support the development of libraries.

First, I'm using the H5P plugin in Wordpress which is working wonderfully so far.

But I have a problem with AR Scavenger, it seems that some complicated pictures are recognized and some others are not recognized, then when I make a new AR content and put these pictures which were not recognized, this time they are recognized, but pictures which were are not recognized anymore. I can't seem to make all the markers work (I have few, only 4) in the same time! 

It doesn't seem to be related with the pictures themselves as they are quite different, I've tried with the Beta version on the official library directory as well as the github "stable" version, neither work. I really can't explain what's going on!

Another problem is that I can't use "interactive video" as interaction, it's just not appearing in the list even if I used it separately (so the library is downloaded).