How to open the dustbin of A9s for cleaning?

How to open the dustbin of A9s for cleaning?

I am a new user of the A9s, based in India. I need assistance to understand how does one open up the dustbin for cleaning.

This is the first usage of the A9s for me. One round of vacuum cleaning and mopping done, I wanted to empty the dustbin from the dirt that it has collected. While I have been able to pull out the dustbin unit, I am unable to understand how does one open the dustbin. I have scanned through online knowledge articles but could not come across anything specific on this topic.

I noted the feedback in one of the international user manuals, with a diagram stating that the top part needs to be pulled upwards. I have attempted the same but it does not seem to work.

Would appreciate assistance.