I can't buy the Move Relearner

Why won’t my Secret Base let me buy the Move Relearner? When I go to the mailbox it just says “Log in in the Friend Safari to collect your gifts.” And then when I actually do that, I don’t get any gifts or the option to buy the Move Relearner.

Use the Tablet from your Key Items to purchase Secret Base functions.

Thank you. Where is the Move Relearner once purchased?

It’s fine, I figured it out myself. Thanks for your help.