Why am I getting insufficient quota with OpenAI and n8n?

Hi,
When connecting from n8n cloud to open AI 4o model, getting Insufficient quota error. I have just taken free trial account of n8n and openAI. Need to make some trials before I make final decision on subcription. Billing page of open AI says 0 credits and usage is also 0. So, does it mean no requests are allowed on trial / free version of open AI from n8n ?

I am new to this and learning things from basics. Please help me out in this.

hey there,

did you get an answer to this?