Fundamentally if a plan doesn't work, the plan needs to change. And I've said it before, but ultimately businesses who are in the business of selling weight-loss would lose all their regular income if the lifers actually managed to shed weight and leave
My Slimming World knowledge is out of date (I was on it for a year about four years ago), but I too hit a plateau with SW. Mine lasted three months, and I got zero assistance from my consultant (because, in all honesty, "just stick with it" means I turn up every week and pays my money. I'm what the business-minded like to call reliable income).
What they don't really seem to understand is that if you get into a rut - either with food or exercise - your body settles down again. It adjusts. It adapts to the environment, and in this case your environment is red days and green days with a fairly reliable calorific intake.
Slimming World also convinces you that it's okay not to cut down on the
volume of food you eat. Which... keeps your stomach large... Which... yes... helps you to overeat the moment you fall off the diet and gain all that weight again. Which helps you think "Slimming World lost me all that weight. I will give them even more of my money".
So, enough about Slimming World. What to do?
First, you've lost 61lbs! That's a brilliant achievement

And don't go "But I gained this and lost that..." You lost 61lbs. That's eight newborn babies
Next up... Looking at your Food Diary, you're eating a very random amount. And much of it is the dreaded "free foods". I suggest that you start evaluating your red and green days in terms of calorific intake too. Use a calorie calculator to figure out the calorific content of the meals you're eating, and compare it to a bit of Googling on how many calories you need for your current weight and activity level. All that fruit might be hiding quite a nasty surprise. And 20tsp of lemon curd is almost pure refined sugar.
Try also not to eat the full 15 Syns allowance (it's an allowance, not a target). If you're plateau'd, one of the first things your consultant
should be advising is to cut Syns a little. Try dropping them to 10 and see how that goes.
Finally if you find you need, say, 2,100 calories a day and you're intake is about 1,600 and you're not losing weight, it's time to tackle exercise. I realise that you're agoraphobic and getting hold of a Wii Fit board, but check out the Fitness & Exercise board for posts from Justin on Resistance Training. There are plenty of exercises that you can do in the peace of your own home which are designed to do some serious fat burning.
Good luck!