Their menu is already labeled with gluten free choices, which are a bit limited. They won’t or cant modify any additional dishes. A few apps, soups, pad Thai and two curry options are naturally GF. I prefer their pad Thai to their curry dishes and really love their Tom kha soup.
I always put a message on my takeout orders that I have an gluten allergy and have never gotten sick eating here. They’re also good about following instructions if you have other allergies. Ordering directly through them allows you to put in allergy info, they limit the options through third party sites like door dash etc.