Button has appeared on homescreen that I can't get rid of
I recently had to download Quick TeamViewer app at the request of the support team who provides me with medical equipment that relies on Bluetooth connectivity to phone.
Now there is a small button (icon) on the edge of my home screen that neither does anthing when tapped, nor can I remove it. It is the TeamViewer logo with a depiction of a piece from a jigsaw puzzle in the top left corner. I even removed the app from my phone and the button remains. This is really annoying as it sits on top of all other displays on my phone.
Can anyone advise how to get rid of this? I have a Google Pixel 5 phone.