Did you try resetting the WiFi connection on the camera? I found when switching apps to connect to the camera I had to start from scratch (at least on my X-T2).
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Try Cascable. They just added Fuji JPEG support and it worked well for me an hour after the eclipse to post my best pic to the web. Fuji RAW might be a challenge but for JPEG it’s head and shoulders over anything Fuji has done.
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You can shoot RAW, JPEG, or RAW+JPEG. I do the latter so I get the shot in RAW but also apply a film simulation which more often than not I actually use.
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