Terminal - Crashing on CreateTerminalCheckout

Questions
1

Hi,

Received Terminal today.

Created a Device Code:

POST https://connect.squareup.com/v2/devices/codes
{
  "device_code": {
    "product_type": "TERMINAL_API",
    "location_id": "*************",
    "name": "Foobar Inc"
  }
}

Used the device code to sign in to the Terminal. Got a device.code.paired webhook.

The terminal shows the “Powered by Square” screen.

Made a checkout request for the terminal:

POST https://connect.squareup.com/v2/terminals/checkouts \
{
  "checkout": {
    "amount_money": {
      "amount": 1,
      "currency": "GBP"
    },
    "device_options": {
      "device_id": "****************"
    },
    "payment_type": "CARD_PRESENT"
  }
}

The screen goes blank for a moment, then the Square logo scrolls in from the right (1s), then the screen goes white with a loading spinner and the text “Loading Square terminal” with a percentage. Within about 1.5 seconds, it’s at 100% and we’re back to square 1 (showing the “Powered by Square” screen.

I’ve tried a CreateTerminalAction request (with a confirmation screen), and this worked fine.

I’ve also tried the terminal in the non-connect mode (signing in with a Master account rather than via a Device Code), and was able to take a £1 keyed-in payment via inserting a Debit Card. Contactless would not work; I tried my phone (Google Pay), and various physical debit cards. The only successful payment was via an inserted Chip + Pin card. Any tips there?

Many thanks.

2

Are you running into the minimum transaction value? It’s £1 in the UK, so you would need to send “amount”: 100 instead of “amount”: 1

3

Changing the amount to 100 makes no difference; the terminal still appears to crash when it receives the request. Thanks though, that would have been the next problem :laughing:

4

Have you restarted the Terminal? :slightly_smiling_face:

5

Several times unfortunately :frowning:

I did say it needed an update - when I pressed “Ok”, it didn’t seem to do anything. Version shows as 5.37.0075. Do you know if that’s latest?

6

Okay, if you tried all the general troubleshooting steps the next step would be to do a factory reset. :slightly_smiling_face:

7

Thanks. Whilst looking for the Reset option, I found Settings > Hardware > General > About, where there was an option to install an update. OS Version now showing as 5.41.0088.

And, the request worked! Additionally, I was able to make a contactless payment.

Looks like OS 5.37.0075 is just very, very broken. All good now, I’ll get on with building something cool :wink:

Thanks for your help.