Hello, @markec81cec0066da9a7237711

This is most likely related with the maximum upload file size value. Can you confirm which is the current value set on your end? You should see the value listed on the upload page in the WordPress admin area bellow the Upload New Media window.

You can either increase the limit via php.ini file , the .htaccess or via the functions.php file

1. Via php.ini

upload_max_filesize = 128M
post_max_size = 128M
max_execution_time = 300

1. Via the theme’s functions.php

@ini_set( 'upload_max_size' , '120M' );
@ini_set( 'post_max_size', '120M');
@ini_set( 'max_execution_time', '300' );

1. Via .htaccess

php_value upload_max_filesize 128M
php_value post_max_size 128M
php_value max_execution_time 300
php_value max_input_time 300

The .htaccess file method is less used and I’ll recommend you to try the first two methods.

Let me know if you have any questions.

Regards,
Alex