Become a Label Detective:
Melba toast may contain dextrose and/or maltodextrin. These are both on the hidden sugar list. Your ingredients should be flour, water and salt. Many are stalling or gaining when using this product. I recommend making your own grissini or buying it locally and completely avoiding Melba Toast.
Some stevia brands also have maltodextrin or sugar alcohols. You have to read your labels. Sweet Leaf is a good stevia-only sweetener in the granular form. You can order a healthy stevia product here.
When taking supplements, you need to check every label for maltodextrin and dextrose and any of the other sugars on the list above. There are so many low end vitamins and supplements that use these sweeteners as fillers. Little Choices Matter offers a line of pure and reliable supplements.
Check every label of everything you use. If you are stalling or gaining it is likely one of these are the cause.