Are you using a Linux desktop? Recently I ran into this more and more. Eventually it came down to Linux being in the user-agent causing a large chunk of sites

Are you using a Linux desktop? Recently I ran into this more and more. Eventually it came down to Linux being in the user-agent causing a large chunk of sites to assume I was using android. This became apparent when gmail asked if I wanted to download the mail application when visiting their site with cookies cleared. Once the agent was changed I no longer get mobile type notifications (on my desktop).