ReactPress shows “n” letter instead of my app

Hi, I’m using WordPress 6.4.3 and ReactPress 3.2.2, and I’m getting a blank page where my app should be, this is a problem that happens in my local WordPress install but also with SiteGround as provider, however if I use NameCheap with the exact same setup it runs fine, I’m using Vite, I put the dist folder as I do on the NameCheap’s file manager, but it won’t run in SiteGround. Also, I tried using a postbuild script to change the folder structure as it was a CRA app with no success:
“postbuild”: “shx mkdir -p build/static/js build/static/css build/static/media && shx mv dist/assets/*.js build/static/js && shx mv dist/assets/*.css build/static/css && shx mv dist/assets/* build/static/media && shx mv dist/index.html build && shx rm -rf dist”

Here is a link with the app running in the context of a WordPress install under NameCheap (https://robertperezc.com/), the app is the teal-colored form that says “Cotización de Asistencia al Viajero” at the bottom of the page. However in SiteGround it only shows the “n” letter and that’s it, no console error no nothing.

Any hint or help is appreciated, thanks in advance.

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