Only 270 cards on V12

Hello,

What tag are you checking?

It appears you have protected all your fields.

Please unprotect the text/extra fields then do the following

Please try resetting your local changes. To do this:

Go to browse in your Anki → at the top click on ankihub addon tab → press reset all local changes

This will restore everything to what AnkiHub has unless you have specifically protected those fields

See the second part of the FAQ for more information: Why are my cards blank/empty when reviewing?