The lemmy.world instance was just updated to version 0.18.2. The login issues that were being reported (for example, here [https://lemmy.world/post/1364490]) are now resolved. For release notes: https://lemmy.world/post/1339018 [https://lemmy.world/post/1339018] Edit for those who still have issues logging in: - When using a browser: clear cookies and cache - When using an app: remove your lemmy.world account and add it again.