It says I'm not eligible for the student discount

[weegeekelvin]

I firstly subscripted to Premium in Hong Kong

However , I am not in the UK for my university.

I want to redeem the UK student discount so I have changed my payment method to my UK debit card.

Strangely, after that I am still not able to choose the UK student plan, even I have successfully logged in UniDays.

it says I am not eligible for the discount

The subscription page has both GB Pounds and HK Dollars showed at the price tag in the same time.