I can't get my characters back.

I haven't logged in for several years and I see that the Frostwolf server is no longer playable. Is it possible to recover the two characters I still have on that server?

They appear with strange numbers instead nicknames

I am currently playing on the Lordaeron server.

Its possible to recover this characters somehow?

Unfortunately you can't get your characters back, this was a post for decomissioning Frostwolf realm: https://forum.warmane.com/showthread.php?t=479879

You have to create new chars.