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.
This article concerns Windows users only
One of possible reasons why plug-in doesn't show up on plug-ins list may missing runtime libraries required by the plug-in, that usually is pre installed. You may download and install those libraries manually:
Use the search or contact our staff:Submit a ticket