From the Gluten Free Watchdog website:
In early January of 2022, Gluten Free Watchdog issued a statement warning the community about supply chain issues with oats. At Gluten Free Watchdog we have seen an increase in oats testing with quantifiable gluten either at/above 20 ppm OR above the level of gluten allowed by their certifying organization. At this time (April, 2023), Gluten Free Watchdog cannot recommend any brand of gluten-free oats. This includes products that are certified gluten-free or made using purity protocol oats. We will issue an update when the situation warrants.