Reddit is the only platform that actually tells you that you are shadowbanned, so at least they are upfront about it, but their appeal system sucks. My friend just appealed every day for just over 600 days and finally got their account un-shadowbanned.
No, they have fully banned and shadowbanned. If you are shadowbanned you can login and check the appeals page but your posts and comments will no longer be visible. If you are fully banned you cannot log in.