Hi,
Game: Menacing-jeans-3286
I (Bescods) am unable to form a federation with Academy (value 5 with tech tile) in sector 7 and TP in sector 8 (6t). App tells me I can form it with less satellites and suggests connecting the Academy with the mines in Sector 10, excluding the TP in sector 8.
This is not a bug, the app is correct. You can connect the buildings you want to connect using only 5 satellites by using the connected mines in sector 10 and 4 as a hop. Therefore, you cannot choose to use 6 satellites. See also https://boardgamegeek.com/thread/2120375/official-federation-faq, especially the questions concerning rule 2.
you probably know, but just in case: if you make the mines in s10/4 part of a different federation first, it will then be legal to make the academy-tp fed you wanted