Can someone help me with DB issue with Vodahost?

I am not familiar with Vodahost or this script but I am database designer / developer / performance tuner and this is a DB issue so...

This error message often is caused by the parameters being used to connect to the database either being incorrect (not spelled correctly) or else the user is not actually assigned to the database in question or that user does not have sufficient privileges.

It is telling you specifically Access denied for user.

Check the name of your database, the name & password of your MySQL DB user and the name of your MySQL server and make sure they are correct in the code within the script that is trying to make the connection to the database.

Next, check the DB user to make sure that it has been assigned to the database and finally check to make sure it has sufficient privileges.

More likely, it is a misspelling or else the user has not been assigned to the database. But you definitely want to check and make sure the user has privileges as well. If you are trying to query one or more tables, the user needs to be granted the SELECT permission. If you are trying to add new records into a table the DB user needs to be granted the INSERT permission. And so on.

If I was familiar with the script I could probably provide more detailed info but based on the info you have provided this is as good as I can do.

Since you are installing a script someone else wrote I am guessing you may not be a programmer yourself. So, if the above seems too technical, keep in mind that a good web hosting company will provide technical support for things like this. You may want to contact them.

Hope it helps!