Database connection error

Activating via CURL
{"result":"SUCCESS","latest_version":"2.8.8","on_sale_version":"2.8.8"}
Could not create DB link!
SQLSTATE[HY000] [1044] Access denied for user 'theremov_admin'@'localhost' to database 'theremov_stidstondesign'
Could not create DB link!
SQLSTATE[HY000] [1044] Access denied for user 'theremov_admin'@'localhost' to database 'theremov_stidstondesign'
DELETE FROM perch2_settings WHERE settingID= AND userID= LIMIT 1
Could not create DB link!
SQLSTATE[HY000] [1044] Access denied for user 'theremov_admin'@'localhost' to database 'theremov_stidstondesign'
Could not create DB link!
SQLSTATE[HY000] [1044] Access denied for user 'theremov_admin'@'localhost' to database 'theremov_stidstondesign'
Could not create DB link!
SQLSTATE[HY000] [1044] Access denied for user 'theremov_admin'@'localhost' to database 'theremov_stidstondesign'
Could not create DB link!
SQLSTATE[HY000] [1044] Access denied for user 'theremov_admin'@'localhost' to database 'theremov_stidstondesign'
INSERT INTO perch2_settings(settingID,settingValue,userID) VALUES(,,)
Could not create DB link!
SQLSTATE[HY000] [1044] Access denied for user 'theremov_admin'@'localhost' to database 'theremov_stidstondesign'
Could not create DB link!
SQLSTATE[HY000] [1044] Access denied for user 'theremov_admin'@'localhost' to database 'theremov_stidstondesign'
Could not create DB link!
SQLSTATE[HY000] [1044] Access denied for user 'theremov_admin'@'localhost' to database 'theremov_stidstondesign'
DELETE FROM perch2_settings WHERE settingID= AND userID= LIMIT 1
Could not create DB link!
SQLSTATE[HY000] [1044] Access denied for user 'theremov_admin'@'localhost' to database 'theremov_stidstondesign'
Could not create DB link!
SQLSTATE[HY000] [1044] Access denied for user 'theremov_admin'@'localhost' to database 'theremov_stidstondesign'
Could not create DB link!
SQLSTATE[HY000] [1044] Access denied for user 'theremov_admin'@'localhost' to database 'theremov_stidstondesign'
Could not create DB link!
SQLSTATE[HY000] [1044] Access denied for user 'theremov_admin'@'localhost' to database 'theremov_stidstondesign'
INSERT INTO perch2_settings(settingID,settingValue,userID) VALUES(,,)
Could not create DB link!
SQLSTATE[HY000] [1044] Access denied for user 'theremov_admin'@'localhost' to database 'theremov_stidstondesign'
stdClass Object
(
    [result] => SUCCESS
    [latest_version] => 2.8.8
    [on_sale_version] => 2.8.8
)
Activation: success
Could not create DB link!
SQLSTATE[HY000] [1044] Access denied for user 'theremov_admin'@'localhost' to database 'theremov_stidstondesign'
SELECT u.*, r.* FROM perch2_users u, perch2_user_roles r WHERE u.roleID=r.roleID AND u.userEnabled=1 AND userUsername= LIMIT 1
Could not create DB link!
SQLSTATE[HY000] [1044] Access denied for user 'theremov_admin'@'localhost' to database 'theremov_stidstondesign'
Writing auth fail to log.
SELECT DISTINCT settingID, settingValue FROM perch2_settings WHERE userID=0
Could not create DB link!
SQLSTATE[HY000] [1044] Access denied for user 'theremov_admin'@'localhost' to database 'theremov_stidstondesign'
Queries: 0
Memory: 1.633
Array
(
    [type] => 2
    [message] => Cannot modify header information - headers already sent by (output started at /home/theremov/staging/perch/core/lib/PerchDB_MySQL.class.php:75)
    [file] => /home/theremov/staging/perch/core/inc/top.php
    [line] => 16
)