As a sort of tag to my friending meme promo (which is still going on btw!) Dreamwidth has posted some notes about successfully importing to Dreamwidth from LiveJournal: https://mobile.twitter.com/dreamwidth/status/1501280756068495361
The short version: LJ is intermittently blocking the IP addresses Dreamwidth crawls from, possibly because of people misinputting passwords. There’s not a ton they can do about that unfortunately but trying again later will usually work