Why is there a watermark in my unity android free?

I just switched from the 30 day pro trail to the free one and it is still showing a watermark in the bottom right corner even though I cannot use any of the pro features?
I thought that unity made the android and Ios basic port for free? Could someone clear this our for me?

I’m not sure but you might need to switch your licence back to the free licence. I actually never had the case but it might work.