M2Web API t2mdeveloperid error

I am trying to make an M2Web API Export Block Descriptor request. I am using the following request syntax as shown on the website: https://m2web.talk2m.com/t2mapi/get/MyeWON/rcgi.bin/ParamForm?AST_Param=$dtHL$ftT$et_0$st_m1&t2maccount=MyAccount&t2musername=MyName&t2mpassword=MyPassword&t2mdeveloperid=MyDeveloperID&t2mdeviceusername=MyeWONUser&t2mdevicepassword=MyeWONPassword

I do have a developer ID (which I got after submitting the online form), but I am getting the following response: {“message”:“Missing argument [t2mdeveloperid]”,“code”:400,“success”:false}

Any ideas? I have also tried using another t2mdeveloperid but got the same response. Thanks.

Are you using a POST or a GET request?

GET

To close out this topic, we spoke on the phone and you were able to get data though postman.