36 sensors means a lot of wires. The problem with the I2C bus is the wires.
Maybe the sensor has an internal pullup resistors. 36 pullup resistors might be too much.
I have written on Github something about the I2C bus: How to make a reliable I2C bus.
When someone has a single small problem on the I2C bus and asks on this forum how to fix it, then I have to tell that he/she has many major problems with the I2C bus.
You have to do everything just right to be able to use 36 devices on a I2C bus.