On the main page of member app, click on support and register your phone if you havent done that already

It doesnt show right away. It takes time but you bought on 17 jan so it should have appeared by now. Did they register your phone on samsung?

When you open member app, click on benefit. There you will see your voucher to redeem earbuds2. Copy the code of voucher and click the link of form to fill your details. They will ask your voucher so paste that voucher code which you copied and thats...

When did you buy your phone?

S23 Fe