Is your gluten-free diet strict? Do you eat out in restaurants? If so, you could be getting contamination, and over time that can slow recovery. You may want to get a follow up celiac disease antibody panel done to make sure that your levels have gone down since your last tests. Also, have you had various nutrient levels checked via a blood test, and have you been taking vitamin & mineral supplements since your diagnosis?  The most common nutrient deficiencies associated with celiac disease that may lead to testing for the condition include iron, vitamin D, folate (vitamin B9), vitamin B12, calcium, zinc, and magnesium.    Do you still have celiac disease symptoms?  Many people with celiac disease, especially those who are in the 0-2 year range of their recovery, have additional food intolerance issues which could be temporary. To figure this out you may need to keep a food diary and do an elimination diet over a few months. Some common food intolerance issues are dairy/casein, eggs, corn, oats, and soy. The good news is that after your gut heals (for most people who are 100% gluten-free this will take several months to two years) you may be able to slowly add some these items back into your diet after the damaged villi heal. This article may be helpful:    

Hello!  I am here as a last result, hoping for some advice, similar stories, etc. When I was 17, I was diagnosed with Celiac disease. By the time we figured it out my iron levels were so low I had to get infusions, and I had lost 20lbs. in two weeks going from a 5'11 130lbs woman to a 110 lbs. Now, I am 21 and have gained 4 lbs since. Every time I eat a meal, I get three bites in and feel so full that I feel sick. I can't eat a full meal. Something else has to be wrong right? This can't just be more "normal" right? I have done test after test and no doctor in my area can figure anything else out. They have told me I most likely have shrunken my stomach by now with how little I am eating so that has to do with some of the sick feeling. What have you done to gain the weight back? Foods? Workouts? 

Thank you so much, Scott. I find it incredibly daunting navigating this celiac space and I find comfort in your wealth of knowledge. Thank you 🙏🏻

I am not sure about that brand specifically, but this article may be helpful:  

First, I’m so sorry you’re dealing with this—constant bloating and gas can be incredibly frustrating, especially when you’ve been so diligent with your gluten-free diet. Since nothing obvious has changed in your routine, a few possibilities come to mind: 1) Cross-contamination or hidden gluten (have you introduced new brands, eaten out more, or tried processed GF foods with questionable ingredients?), 2) New food intolerances (dairy, FODMAPs, or even GF grains like corn/rice can sometimes cause issues over time), 3) Gut dysbiosis (an imbalance in gut bacteria, possibly triggered by stress, antibiotics, or diet shifts), or 4) Non-celiac triggers (like SIBO or fructose malabsorption). You may also want to take choline supplements, as this helps some people. It might help to keep a detailed food/symptom log and try an elimination diet (e.g., cutting dairy or high-FODMAP foods temporarily). Probiotics or digestive enzymes could also offer relief while you investigate.