Selecting Preset Buttons in Tapographic Delay

I can’t seem to figure out how to select the presets in the Tapographic Delay. I use the main encoder to “release” and “press” the knobs repeatedly, but the presets never seem to be selected. Thanks in advance for any advice you can offer.

If I assign a preset to a knob, let’s say knob A, wiggling the knob works. So do the buttons on MetaButtons once assigned. Did I understand you well that you did try to use the main encoder as a button? I don’t think that will work.