Background image failed to load in container block

Hi!
I am a self-help newbie who had just installed Botiga and first time ever creating a website other than on Shopify.
I’ve tried to upload various (but correct) versions of a jpg image as the background image of the container block without success.

In case you are not able to access the link above, here are the screenshots.
https://wetransfer.com/downloads/94460b31b4d18ffcd7222fff1051c99f20220719140845/cdff83b600d65b1aca9685687b70dad720220719140901/89059f?utm_campaign=WT_email_tracking&utm_content=general&utm_medium=download_button&utm_source=notify_recipient_email

Would really appreciate some advice and thank you in advance!
C

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