Hi, sorry to hear about the trouble.
Undulator responds to MIDI CC1, CC2, CC3, and CC4 messages. I assume these are the messages you are trying to send to the plugin. Info on how to route MIDI to Undulator can be found in this post: https://www.eventideaudio.com/community/forum/plug-ins/how-set-midi-control-plugins-logic-pro
Regarding Undulator intermittently responding – do you mean that occasionally the Undulator effect does not sound, or no audio passes through the plugin, or something else? Does this only occur when you add the second Undulator, or is it always the case?
