How do I renew my firestick membership if it was bought for me by someone else?

End Your Amazon Prime Membership - Amazon.com

https://www.amazon.com/gp/aw/help/id=201118010

When you sign up for Amazon Prime, your membership is set to automatically renew at the end of your chosen membership period. You can turn off this automatic renewal at any time including during a free trial period. Additional subscriptions tied to your membership will not renew once your Prime membership ends
click on the blue link to get directions from amazon

When you sign up for Amazon Prime, your membership is set to automatically renew at the end of your chosen membership period. You can turn off this automatic renewal at any time including during a free trial period. Additional subscriptions tied to your membership will not renew once your Prime membership ends.
Want to cancel your Prime membership?
End Membership
To end your Amazon Prime membership:

1. Go to Manage Prime Membership .
2. Do one of the following:
   • To cancel a paid Amazon Prime membership, click End membership.Note: Paid members who haven't used their benefits are eligible for a full refund. You can't receive a refund if any of the household members have placed an Amazon Prime eligible order.
   • To cancel an Amazon Prime free trial, click Do not continue. Note: If you don't cancel your Amazon Prime free trial, you will automatically continue to a paid membership at the end of the trial period. You can find this date listed on the left-hand side of the Manage Your Prime Membership page. You will still have access to your Prime benefits until this date.
     

If your Prime membership is associated with a service you receive through another company (such as Sprint), please reach out to that company to manage your Prime membership.

try this link.
How to sign into amazon prime on firestick Google Search

How do you unsubscribe from Amazon Prime?
To turn off this automatic renewal:

• Go to Manage Prime Membership.
• Review the renewal date: If you currently have an Amazon Prime free trial, click Do Not Continue. If you currently have a paid Amazon Prime membership, click End Membership.

End Your Amazon Prime Membership Renewal - Amazon.ca

https://www.amazon.ca/gp/help/customer/display.html?nodeId=201514690Search for: How do you unsubscribe from Amazon Prime? unsubscribe from Amazon Google Search ..this is all i could find hope it helps you out.

Hi
I would recommend you go here:
Cancel Your Amazon Prime Membership
and follow the instructions. Alternatively you could go here:
Turn Off Your Amazon Prime Membership Renewal
where you can turn off the renewal.
Hope this is helpful, if so would you please register that with Fixya
Cheers

If you could elaborate, I'd be happy to help.

What membership are you trying to renew?

You will have to download CaddieSync inorder to do this. You can get this program here.

http://www.skygolf.com/membership/memxbers.asp