On some sites I get a popup message. UNKNOWN PROTOCOL. The protocol nielsenwebid is not supported by any app on this device. All these sites that won't open in Opera Mini will open in chrome and the internet browser installed on my tab S2 tablet. So this message that pops up saying this website is not supported by any app on the device is incorrect and looks like it is only relevant to opera mini. Is there an instruction anywhere in opera mini whereby I can fix this problem as it is a good browser but not quite up there withe best yet.