Hello,
First of all, thank you for your purchase.
I am not sure if I understand your question correctly, however, I try to respond in 2 possible ways, please pick the answer you need.
1. If you wish to change the length of post excerpts of the articles created by the plugin, you can do this by editing the ‘Excerpt Word Count’ settings field from the plugin’s ‘Main Settings’ menu. Here you can also disable the automatic excerpt creation and leave WordPress to automatically create post excerpts, if you check the ‘Disable Automatic Excerpt Generation’ checkbox -> save settings. Please note that this change will be applied only to newly generated posts.
2. If you wish to change the length of the post content which is imported into posts, you can do this by editing the ‘Limit Article Word Count’ settings field from importing rule settings, for each rule.
Also, to be sure the content is correctly shared to social media (as you mentioned in your question), please be sure to install a SEO plugin like Yoast or All In One SEO, which will create the required meta tags for social sharing (you might be able to set content length for social sharing also from the SEO plugin’s settings).
Let me know if this info helped.
Regards, Szabi – CodeRevolution.