did you set up any necessary databases, double check DB connection settings in script/config file, check other details info, etc.
some servers prefix all tables with partial domain name:
EXAMPLE
website: http://www.mysupercoolsite888032023.com
Database you made: faketraffic
Actual DB name end up being: mysuperc_faketraffic
* typically I think they (hosting company) take first 8 hars, underscore, then dbname