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.
If plug-in you've just installed doesn't show up on plug-in list in Ableton Live, please walk through following steps:
First of all make sure all Software Requirements are met by your setup.
Additionally if you're Windows user:
Try out the solution described in this entry at our FAQ. It's possible that some system runtime libraries required by plug-in are missing. This concerns especially relatively fresh Windows installations.
Still no success? Try to disable Use VST Plugin-In Customer Folder option in Ableton Live's preferences and then re-enable it. This will force Albeton Live to perform much thorough plug-in scan than using Rescan option. This concerns both platofrms: Mac OS X and Windows
Additionally if you're macOS 10.13 High Sierra user and utilize Audio Unit format of the plug-ins, check out this entry at our FAQ
Use the search or contact our staff:Submit a ticket