Connection problems M8s android box

Hi

This past days my android box has stopped working. I used it for perhaps 6 months but now it has stopped. It appears I have no connection but I can get connected with Ethernet cable or wi-Fi no bother. The apps won’t open as if there is no connection.

I’ve no idea how to fix the problem because my box is telling me I have a strong connection. I have no problem with other devices linking into my internet.

Any help or suggestions welcome

Cheers