Did you try to enable the minimal environment as I suggested? Also, please share the staging site credentials in the next reply (the production site credentials were removed for security reasons).
I fixed the issue on your site by going to WooCommerce > WooCommerce Multilingual > Settings > Troubleshooting > Select "Sync products variations" and click on Start (it would take time to complete the process).
You can also try to edit the product in the Portuguese language > Make a small change to the product description > Save > Update the translation product and see if it helps.
On the staging site, I see the variations of that product displayed correctly in second languages hidden link
If it does not help, I would like to request temporary access (wp-admin and FTP) to your production site so I can take a better look at the issue. Your next reply is set to private to share the info.
❌ IMPORTANT: Please backup your database and website before proceeding ❌
After running the troubleshooting step "Sync products variations" as I mentioned above, the variations in the second languages are displayed correctly. Please recheck this and let me know how it goes.