A new button in H2H??

When I was playing H2H just now I saw a blue button pop up on my right side of the screen we’re most buttons are at. Never seen this button before so I clicked on it and it showed a screen saying no ads. This is the second time that has Happend. I thought it was my phone so I checked what I have that could be doing this and it’s none of my app or files that I have.I’m wondering what is this for and why has it been added. Also am I the only one who has gotten this and why. I provided proof on the attachment I added to this post.