[2021] Account Issues

So, I have a lot of stuff on Dauntless on the switch, but I recently got a PC and wanted to start playing on that with my old account, but for some reason, it's not letting me use my old account when I'm signed into epic games, and on dauntless on the switch, it shows that it's linked to my epic games account under an old name, has anyone else had this issue or know how to fix it?

Thanks in advance