Thanks for posting here @Vishal. Here’s where you can learn more about setting user properties - link. Let me know if this helps. 

Thanks @Jeremie Gluckman I have already seen the postman workspace collection ( the identify api https://api2.amplitude.com/identify to set the user properties ). but now another issue haha it does not clear the old user properties, and clearUserProperties() is also not a promise …. and there is no api to clear all the user properties in one go. Do you have any solution or workaround for this @Jeremie Gluckman, thanks again 

Thanks for clarifying @Vishal. I’ll make sure the team is aware and someone will get back to you.

Hi @Vishal closing the loop here. This was a network issue on your end