App only loads in two devices at the same time

When I look at the link. I don’t see any React app there. Only a <div id="root"></div>.

Maybe something went wrong during deployment. Please double check that you followed these steps:

1. Install ReactPress on your local WordPress installation
2. Use create-react-app from the command line in the apps folder shown in ReactPress
3. Reload ReactPress page and give the app a slug
4. Develop your React app
5. Build the app
6. Install ReactPress on live WordPress site
7. Create the same folder there (no need for create-react-app) there
8. Upload the build folder of your React app into the created folder.
9. Reload ReactPress page and give the app the SAME slug.

Hello,
I noted that when I upload the build folder to the server the public/index.html is become 0 bytes and in my local environment the file is ok.

I received this log from my host:

Got error 'PHP message: PHP Warning:  include_once(/home/edmoap.com.au/htdocs/wp-content/plugins/reactpress/reactpress.php): failed to open stream: No such file or directory in /home/edmoap.com.au/htdocs/wp-settings.php on line 409

PHP message: PHP Warning:  include_once(): Failed opening '/home/edmoap.com.au/htdocs/wp-content/plugins/reactpress/reactpress.php' for inclusion (include_path='.:/usr/share/php') in /home/edmoap.com.au/htdocs/wp-settings.php on line 409

PHP message: PHP Warning:  strpos(): Empty needle in /home/edmoap.com.au/htdocs/wp-includes/plugin.php on line 711

Both issues you describe doesn’t seem to have something to do with ReactPress. I am sorry I can’t help you.