I received exactly the same letter a while ago! My 66 birthday is in February 2026, and I've only just realised that ESA (in the support group too) stops when I turn 66. But like you I found the letter informing me I would get £21 less, per week, due to "change in age" so misleading. I got clarity now on here by reading your responses. Looks like I will have to apply for Pension Credit! How will you manage?
