Those 2 lines that come into the house and enter "the things that look like splitters" are NOT splitters, they are switches. Prolly SW-21s, if I were to guess. You will need to run 4 cables total (upgraded from 2) to the Dish and then get a different switch solution to go above 4 Dish boxes. The LNBs are actually switching as well, when you used a splitter, either no channels work or only select channels would have the correct switching as default to lock.
Those 2 lines that come into the house and enter "the things that look like splitters" are NOT splitters, they are switches. Prolly SW-21s, if I were to guess. You will need to run 4 cables total (upgraded from 2) to the Dish and then get a different switch solution to go above 4 Dish boxes. The LNBs are actually switching as well, when you used a splitter, either no channels work or only select channels would have the correct switching as default to lock.