Tuya does not reply with Token ID

Hi
Getting Started With Arduino IoT Control With Tuya I'm stuck at the step:

you have to send the product ID (PID) and your Tuya IoT account name (e-mail) to devops@tuya.com. After a while, they will send you a Token ID

They don't send anything. Any answer. I have been waiting for more than a week, trying to formulate the request in different ways. But still nothing. (yes I have chacked the spam folder)

What can i do wrong? Maybe something missing in the manual?

Same here, I've emailed them twice over the last month, no replies