You can upgrade your membership from your account > membership menu.
Can i get membership features for my previous requests ?
If you subscribe for a membership after your request has been completed, you won't be able to get features such as extented warranty, products points for that package.
Can i downgrade my membership and get refund?
Your have to wait the membership expiration date to downgrade. We cannot refund a membership for any reason.
Can i change the date of the membership period ?
No we cannot change the date of the membership period as well as the membership expiration date.