Zip Code no longer show on invoice

For some reason, zip codes are no longer showing on invoices. Instead "{post code}" shows. Does anyone know where I fix this? Thanks in advance!

check system >> localisation >> language and the selected country with issue. Check the address format entered

I checked and it's set up like it always has been with the {post code} there and enabled.

it should be {postcode} without the space

It now shows "postcode" but still won't show up on invoices. I've checked in File manager: catalog/language/english/checkout and it shows on line 64: $_['entry_postcode'] = 'Post Code';

Is there anywhere else I can check?