I started getting the cryptocurrencytopnews.com pop up last Monday I don't have Instagram installed and haven't installed anything new in months does anyone know what other apps this comes with
Does the pop-up occur when the device is placed into safe mode?
It sounds like a third-party application that you have downloaded is loading adds on your device.
I would recommend testing in safe mode to see if the symptom persists and if it doesn't happen in safe mode. I would review your apps and remove them until you find the one causing your concerns.