No SIM Card Detected

I have a Balance20X and am attempting to use a Google Fi Data SIM card as a backup connection. No matter what I do, I can’t seem to get the router to pick up the SIM card

  1. Ordered the DATA SIM card from Google Fi
  2. Activated the DATA SIM card
  3. Inserted the sim card into slot A with a metal adapter and a paper shim to keep everything in place
  4. Rebooted the router
  5. Checked for SIM card
  6. Dashboard reports No SIM Card Detected
  7. Repeated steps 3-5 using slot B
  8. Dashboard reports No SIM Card Detected
  9. Tried setting bandwidth monitor.
  10. The dashboard showed the router was resetting the SIM card, but went back to No SIM Card Detected

Any and all help is greatly appreciated.

Got it. Switched slots and somehow it connected…