Importing large data from blogger

Firstly, your upload_max_filesize is much smaller than your post_max_filesize which means that even though you can POST 100MB of data, PHP will only accept files in that POST data which are 8MB or less. Try increasing this limit.

Secondly, are you sure that your php.ini is being loaded by your host? Not all hosts allow their tenants to load user php.ini. You may be able to get around this by using the ini_set() function in your wp-config.php:

ini_set('upload_max_filesize', '100M');
ini_set('post_max_size', '100M');

You might also want to set max_execution_time in case you’re getting timed out before your upload completes.