Different Email ID used for Purchase of a 1 year Life Membership

Hello, my sister bought a 1-year 5.0 MG Life membership for me using her own email ID.

After receipt of the new band, i have connected it to my account via Bluetooth.

There is no issue in connectivity, however it says that the membership is expired.

How do i resolve this issue? i have the receipt, payment copy etc. etc. and i have opened the box myself so it has only been connected once to my email account directly.

Thanks for any assistance, i have been off-whoop for a while and was really looking forward to start again!