Hi Faiz,
It seems you just missed Dan’s post on the same subject! I’ll add a topic to the FAQ section to cover this off for future reference. In the meantime:
If you subscribed via Stripe then you can go to My Home/Membership/Subscriptions. You should see an UPDATE link where you can change your credit card details.
If you subscribed via Paypal then you will have to go into Paypal itself to make those changes.
Hope this helps but if you get stuck or can’t see the update link let me know and I’ll investigate further.
Stay well!
Jamie