Hello Deathe25,
The reason that the complimentary scenarios haven't generated for you is because it appears that the Lost Omens or Pathfinder Adventure lines have not yet sent you an item. The subscription is not considered active until this happens. You need just one more of them to be active to qualify for the complimentary subs.
The Slithering should be a part of July items though, meaning that you will have the complimentary scenarios as soon as next month. If you have any further questions, please let us know. Thank you!