In other countries, the approved age is up to 45 years old, because its FDA approved, that is why in other western countries if they are above 26 years, they are still being given the vaccine.
That is why in Singapore, if the person is above 26, the person can be given the vaccine. Why? because there are studies and it is evidence-based on the use of the vaccine. So, the answer is yes, you can still get the vaccination even though you are above the recommended age.