Datalink from JTAC working here flawlessly. Latest Open Beta.
As you can see:
After Check In and 9 Line, JTAC sending target data via datalink, TAD advisory working. New Tasking Flashing, Red triangle on TAD.
JTAC position green X marked, Red triangle for TGT
Datalink Message correct.
You can try this mission yourself if you want. JTAC.miz