database is down or you pointed it to the wrong address.

you must export your mysql database on old hosting and import it on new hosting, them manualy change ow_includes/config.php, where you set new database name, user and password

I've had to do this also except I'm still getting the same thing :/ What is wrong, would you care to have a look I've finally managed to get it to do something except I get errors. I've had to move from my original free host to another 

https://anarchyhangout.000webhostapp.com/