Let's give it a try with a step-by-step guide.
The microphone is connected and Totalmix is open.
The hardware output AN1/2 must be active, you have to click on it, somewhere next to the fader.
The output is now highlighted and activated for receiving signals from the inputs.
You can doubleclick the fader of it.
And you have then click the wrench tool button to open the channel, there are some buttons inside.
There is the button Loopback, click on it.
The hardware input channel where your microphone signal is coming in, doubleclick on its fader.
Now the signal goes to output AN1/2.
Next to the input fader of the mic signal is a small fader, the FX-send, you can pull up this fader for sending some of your signal to the effect, activate reverb effect before.
Next to the AN1/2 output fader is a small fader the Fx-return, pull it up a bit for adding reverb to the signal.
This AN1/2 signal with reverb is going into the Zoom application because you have pressed the Loopback button.
The fader of harware output AN1/2 is for you to use for adjust the volume of the mic signal send into Zoom.
The small faders Fx-send and FX-return are for adjusting the amount of reverb signal.
You can try this step-by-step, it may help.
But the telephone support from Jeff and from Daniel is for sure the more comfortable way to get help in any situation.
M1-Sequoia, Madiface Pro, Digiface USB, Babyface silver and blue