incompatibility with PHPbb or SMF forum ?


Apparently, I have a compatibility problem with PHPbb3.1.8 and SMF 2.0.11 impossible to end a week of installation, I get the following error message:

Access denied for user ‘lalunxxxxxx’@‘91.2xx.1xx.2xx’ (using password: YES)

database server

Server: Localhost via UNIX socket
Server Type: Percona Server
Server version: 5.5.47-37.7 - Percona Server (GPL), Release 37.7, Revision 764f304
Protocol Version: 10
User: lalunxxxxxx @ localhost
Character Server: UTF-8 Unicode (utf8)

Web server

Apache / 2.2.22 (Debian)
Version of the database client: libmysql - 5.6.19
PHP extension: mysqli Documentation
PHP Version: 5.4.45-1 ~ + 7.1 Dotdeb



Does anyone has encountered this problem??

I hope I have posted in the right place, my English is not perfect and I apologize!

thank you in advance for your help