You have a seed phrase, but it’s not the same as an on-chain wallet since your sats are in channels. You can’t just recover on-chain without closing your channels.

You should take some time to read their FAQ and if you want to jump into the nostr:npub1hxfkcs9gvtm49702rmwn2aeuvhkd2w6f0svm4sl84g8glhzx5u9srk5p6t TG we have some people who can probably give you some more detailed answers.