Hey, It should work now. Now accepting a wide range of TLDs with no restriction on number of characters.

DeanOutlaw, I was familiar with the issue. At this moment, the API can only accept one word (like COM) and two word (with 2 characters each like CO.UK) TLDs. I will update you once I resolve this issue within next few days.

For the time being, you could send the TLD and name separately with payload:
{“name”:“jhkdfhasdkf”, “tld”: “com.au”}