i have this plugin

Hello i have this plugin https://premium.wpmudev.org/project/subscribe-by-email/

Only i want to hide it from the public and only allow members to use it, is there a way i can hide it as shown, as i dont want non paying members to see it

http://phuketcreativestudio.com/wptraders/analysis/asian-australian-stock-market-analysis

Can it be modified?
Regards