Nicla Sense ME and MKR WAN 1310 not talking to each other

Hi everyone,
I was trying to follow the tutorial that uses the Sense ME as a shield on an MKR board, but I never got it working right.

First of all, the host board never exited reset because the Nicla kept the reset line at 1.1V.
I circumvented this problem by cutting a pin, but when I should have seen something in the host’s serial monitor, nothing appeared (or if something did show up, all the accelerations were at 0, even while I was moving the board).

Trying to connect the two boards with the ESLOV cable that came with the NICLA went the same way.
Searching the web, I found some posts, but none could provide a definitive fix.
The only change I found was when I used the sketch suggested here, and I only got back:
12:05:43.821 -> Initializing BHY2Host: success
12:05:43.821 -> Initializing accelerometer: success

I’d like to add that, while trying to diagnose the initial problem with the reset pin, I noticed that none of the GPIOs on the Nicla worked right while trying to execute a simple blink.
Only the built-in RGB worked as intended.

Can someone please help me figure this out?