Why accept the result? Send it back and have them deliver something usable.

It was running when they accepted it. However they didn't realize that the group was running the Django/Postgres 'backend' on a managed Digital Ocean instance, then there were two different Vercel 'projects'. It was costing hundreds and hundreds of dollars a month to run for a project that was VERY lightly used.

They paid them on the strength of seeing it working, but then the consulting group basically ghosted when the customer asked to adjust it to run on cheaper hosting (probably because they couldn't), then the site got shut off because the hosting was all in the consulting groups name and they stopped paying it. Digital Ocean nuked the database for non-payment and they lost tons and tons of manual work putting in data.