No longer provided option to request comfort+ upgrade without Middle Seat
I'm sure I'm doing something wrong, but I vividly recall the Delta app allowing me to request an update to Comfort+ aisle or window only. I just booked two flights for later this week and in both cases, I am unable to check the box to the request a comfort+ upgrade but it states : "Aisle, middle, or window seats will be assigned based on availability". Did something change with the app? Or the ability to request a non-middle seat?
*I recently became Platinum if that might have changed something for me*