When you receive the error "imagettfbbox(): Could not read font" on ads details page, this means you have a "file missing" or a "server configuration" issue. The PHP parse_ini_file() function has been disable on your server.
To solve it:
Make sure you have upload all the script files on your server (including the /packages/larapen/texttoimage/src/Libraries/font/FiraSans-Regular.ttf file)
You have to enable the PHP parse_ini_file() function on your server or contact your host to do it.
NOTE: In addition, before installing the script, please make sure you have using a default PHP configuration (all PHP functions must be enabled).