Hello and welcome,
You have come to the right place for help. There could have been a number of reasons you stop losing weight last time. One thing try to start a jornal on here so you and others can see what you are eating and give you some tips. Use www.fitday.com to count your carbs it is a great tool. Be sure to drink as much water as you can. Drink at least 8 glasses a day. You will feel like crap at first and have withdraws but that means it is working give it a few days. Read as much as you can on this site. There is just so much information and exellent recipes here. The people are great too. Maybe last time you just needed some new ideas. Just be sure if you are doing Atkin's to stick to induction faithfully. You can do it.
Use pepperoni sticks, pepperoni, sugar free jello, deviled eggs, celery and cream cheese, summer sausage, tuna, pork skins and stuff to snacks.
Take it a half hour to a hour at a time at first. Be proud that you made that far and don't mess up. If you feel hungry, put it off for a while, have a glass of water. Find a craft to do to keep you hands busy like rug hooking, kniting ect... After a few days you will feel good and you should see the weight start to come off.
Like I said read on this site as much as you can.
We are here for you,
Take care, God Bless