Installation problem

Hello everyone,

I have troubles concerning the installation of Projeqtor so I hope someone could help me !

I uploaded on my web server all the files and then I went to the adress www.mywebsite.fr/projeqtor/
But when I complete the information asked for the configuration I have error messages and I cannot figure what is the problem.

(Of course I created a mysql database on Strato before)

Error message is : SQLSTATE[28000] [1045] Access denied for user 'UXXXXXX'@'radomix.store.d0m.de' (using password: YES)
dsn = mysql:host=rdbms.strato.de;port=3306

I tried with two different new database and sometimes I can also have this error message :

SQLSTATE[42000]: Syntax error or access violation: 1044 Access denied for user 'UXXXXXXXX@'192.168.4%' to database 'dbXXXXXXX'
dsn = mysql:host=rdbms.strato.de;port=3306;dbname=dbXXXXXXXX

Anyone knows what is going wrong?
Thank you