PLEASE NOTE: Questions about wordpress.com use, account, setup, features, and support are off-topic for this site. WordPress.com is a hosted blogging service version that runs on the WordPress platform. It allows a limited number of plugins and themes, although one can pay to have more options.
NOTICE: This is solely NOT a WordPress.com Question, but related to WordPress Migration and Export-Import. I started blogging in WordPress.com and then shifted my blog to a self-hosted site. But ...