if you are sending without buying a phone number from hologram, so that it shows up at the google voice number as a really long number like +882389384392348923 try buying a number for the SIM.
In general, if it worked to a google voice # but not verizon, it’s verizon. try a few friends’ numbers. ATT and T-Mobile are more friendly in general.
see this thread: Receiving SMS from mobile device - #12 by Reuben