Hi Robert.

Can you login successfully with the credentials given though? If it is so, most probably you've inserted the wrong Database data into the software, and this is the reason why the connection to the Database cannot be done correctly.

Please consult your hosting's support as well, and double check all the Database data in order to make sure that it is 100% correct.

Should it still not work after, get back to me here with what the support reported to you so that we might investigate further

Keep me posted

Thank you

Stefano