I am assuming that you have deployed the Laravel application in production and using Supervisor to process the Queued Jobs.
Sometimes when you push the new Email Template then your new email settings or content won't be reflected.
To resolve this run the following commands
Sometimes the event will get cached and turns out a bit tricky to figure out.
php artisan event:clear
php artisan queue:restart
composer dump-autoload
php artisan optimize:clear
php artisan cache:clear
php artisan route:clear
php artisan view:clear
php artisan config:clear
To learn more on using this is single command refer - Laravel Clear Cache Of Route, View, Config Command
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