It supports E2EE.

The desktop and previous mobile clients are based off of Element, it’s only the new mobile clients that are custom.

You will have to start the chat from desktop, none of their mobile clients support starting a Matrix chat as of now.

I live in Canada and screen recording a phone call with audio doesn’t work, and the option that seems to be in the phone app for India isn’t on my phone, even though Canada is a one-person call recording policy country.