Janey1502, don't worry about the machine. It is notoriously unreliable and it also sounds like they aren't even sure how to use the info it gives to guide you.
Stick to protocol foods/water/vitamins/oil, fairly brisk walking regularly, and you will get there. Hormones play a large part in our weight fluctuations so don't fret on that account either. Keep it simple, and try to focus on the inches lost and how your clothes fit, how your energy is and any other NON-SCALE Victories.
If you have less to lose, it
will take longer to drop it off. Just sayin'. Don't compare with your last time, just learn to follow through to maintenance and then practice that, and you won't have to do this again
The truth is that if you are eating under 100g carbs a day, you are likely still in ketosis, if you compare that number with the Standard American Diet, you will see the huge difference.
Also, it is OK to lose some muscle along with your fat loss, after all, how much muscle is needed to move a 300 lb weight compared to a 130 lb weight. So a 300 lb person NEEDS more muscle than a 130 lb person just to live & move. What you should really be watching is the difference in your
body fat percentage compared to lean mass. THAT is what should be improving.
Hugs.... you will get there again!
Liana