Arduino Nano 33 IoT disconnected from IoT cloud when a source is applied

Official Hardware Nano Family Nano 33 IoT
3

Hello! My relays are individual relays, not modules.

  1. I do have flyback diodes on my transistors.
  2. The Coil current is approximately 71mA.

I used BC337 for the arduino due to the source current and for programming it would be more intuitive. The PCF8574 has higher sink than source hence it is much difficult to use the BC337, hence using the IRLZ44 would allow me to "source" current.

I had no issues when i was testing them during batches of 3 - 4 but now that everything is put together, the arduino NINA isn't working as it is intended