Iām finding it difficult to follow your instructions and I can not see your screenshot you sent.
Here is some of my own screenshots trying to follow your advise. I have deleted the empty cards and It seems there are no protected text fields. However there are still blank cards showing.
Could you please make the instructions a little easier to follow. Example of screenshot solutions would be appreciated. Thank you again.
Please follow the second part of this post. You have accidentally protected your text/extra fields, which does not allow AnkiHub to download anything to those fields. You will need to unprotect these fields then reset local changes