You can find the answers to many questions here, it’s very likely someone before experienced the same problem as you do. Otherwise you can also submit an issue ticket and wait for our help.
Pro Tools First is the edition that allows use third party plug-ins purchased exclusively at AVID Store, not installed "externally":
http://avid.force.com/pkb/articles/en_US/faq/Can-I-use-any-AAX-plug-ins-with-Pro-Tools-First
Use the search or contact our staff: