Unable to produce feed (Elite Version)

1) After trying multiple times and for hours we are unable to produce a second feed in English. Our primary feed is in greek.

The feed is stuck at processing 0%

We use TranslatePress – Multilingual for the translation and according to your info your plugin is compatible.

Pls note that WP-Cron is enabled and PHP-version is sufficient.

2) Also we tried every solution you provide to upload products with the “backorder” status. Yet after creating the feed all those products get rejected by Google because they remain “backorder”.

Here is a link to debug.log:
https://mountathoslegacy.com/wp-content/uploads/woo-product-feed-pro/logs/debug.log

The page I need help with: [log in to see the link]