Yeah, it’s something to do with migrating it to my new account.
Discussion
nostr:npub1zafcms4xya5ap9zr7xxr0jlrtrattwlesytn2s42030lzu0dwlzqpd26k5 might be able to help you!
nostr:npub1rvhncy6unedf6mmsmcp0pda4gmq3s4wsg5lkdq4usaxkh0nymltqt0tww0
To add a LN address, open the side menu and go to profile
Hit edit
And add your LN address 
