Cant login after a fresh installation - Invalid credentials, please verify them and retry

Hi Guys, i’m just finished a fresh installation of Graylog and i couldn’t log in in my web browse.
I dont know what to do.

Here are my environment:

CentOS 7:
-> mongodb-org-3.2.12-1
-> elasticsearch-2.4.4-1
-> graylog-server-2.2.3-1

This is my /etc/graylog/server/server.conf:

is_master = true
node_id_file = /etc/graylog/server/node-id
password_secret = RjHNwaMFYmrzFk1F1pAKs0ZOPYglbAPhlCoEk6B9Vaa4qLQF1YT8dJsMHRyb6oF1
root_username = admin
root_password_sha2 = fc8252c8dc55839967c58b9ad755a59b61b67c13227ddae4bd3f78a38bf394f7
root_timezone = UTC
plugin_dir = /usr/share/graylog-server/plugin
rest_listen_uri = http://192.168.0.104:12900/api/
web_listen_uri = http://192.168.0.104:9000/
rotation_strategy = count
elasticsearch_max_docs_per_index = 20000000
elasticsearch_max_number_of_indices = 20
retention_strategy = delete
elasticsearch_shards = 4
elasticsearch_replicas = 0
elasticsearch_index_prefix = graylog
allow_leading_wildcard_searches = false
allow_highlighting = false
elasticsearch_analyzer = standard
output_batch_size = 500
output_flush_interval = 1
output_fault_count_threshold = 5
output_fault_penalty_seconds = 30
processbuffer_processors = 5
outputbuffer_processors = 3
processor_wait_strategy = blocking
ring_size = 65536
inputbuffer_ring_size = 65536
inputbuffer_processors = 2
inputbuffer_wait_strategy = blocking
message_journal_enabled = true
message_journal_dir = /var/lib/graylog-server/journal
lb_recognition_period_seconds = 3
mongodb_uri = mongodb://localhost/graylog
mongodb_max_connections = 1000
mongodb_threads_allowed_to_block_multiplier = 5
content_packs_dir = /usr/share/graylog-server/contentpacks
content_packs_auto_load = grok-patterns.json
proxied_requests_thread_pool_size = 32

When i try to log in i always get this message:

And this is my /var/log/graylog-server/server.log:

2017-04-06T11:04:13.960-03:00 INFO [SessionsResource] Invalid username or password for user “admin”
2017-04-06T11:04:19.225-03:00 WARN [ModularRealmAuthenticator] Realm [org.graylog2.security.realm.RootAccountRealm@6e7ed8f2] threw an exception during a multi-realm authentication attempt:
org.apache.shiro.authc.IncorrectCredentialsException: Submitted credentials for token [org.apache.shiro.authc.UsernamePasswordToken - admin, rememberMe=false] did not match the expected credentials.
at org.apache.shiro.realm.AuthenticatingRealm.assertCredentialsMatch(AuthenticatingRealm.java:600) ~[graylog.jar:?]
at org.apache.shiro.realm.AuthenticatingRealm.getAuthenticationInfo(AuthenticatingRealm.java:578) ~[graylog.jar:?]
at org.apache.shiro.authc.pam.ModularRealmAuthenticator.doMultiRealmAuthentication(ModularRealmAuthenticator.java:219) [graylog.jar:?]
at org.apache.shiro.authc.pam.ModularRealmAuthenticator.doAuthenticate(ModularRealmAuthenticator.java:269) [graylog.jar:?]
at org.apache.shiro.authc.AbstractAuthenticator.authenticate(AbstractAuthenticator.java:198) [graylog.jar:?]
at org.apache.shiro.mgt.AuthenticatingSecurityManager.authenticate(AuthenticatingSecurityManager.java:106) [graylog.jar:?]
at org.apache.shiro.mgt.DefaultSecurityManager.login(DefaultSecurityManager.java:270) [graylog.jar:?]
at org.apache.shiro.subject.support.DelegatingSubject.login(DelegatingSubject.java:256) [graylog.jar:?]
at org.graylog2.rest.resources.system.SessionsResource.newSession(SessionsResource.java:134) [graylog.jar:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_121]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_121]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_121]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_121]
at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory$1.invoke(ResourceMethodInvocationHandlerFactory.java:81) [graylog.jar:?]
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:144) [graylog.jar:?]
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:161) [graylog.jar:?]
at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$TypeOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:205) [graylog.jar:?]
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:99) [graylog.jar:?]
at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:389) [graylog.jar:?]
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:347) [graylog.jar:?]
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:102) [graylog.jar:?]
at org.glassfish.jersey.server.ServerRuntime$2.run(ServerRuntime.java:326) [graylog.jar:?]
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271) [graylog.jar:?]
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267) [graylog.jar:?]
at org.glassfish.jersey.internal.Errors.process(Errors.java:315) [graylog.jar:?]
at org.glassfish.jersey.internal.Errors.process(Errors.java:297) [graylog.jar:?]
at org.glassfish.jersey.internal.Errors.process(Errors.java:267) [graylog.jar:?]
at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:317) [graylog.jar:?]
at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:305) [graylog.jar:?]
at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1154) [graylog.jar:?]
at org.glassfish.jersey.grizzly2.httpserver.GrizzlyHttpContainer.service(GrizzlyHttpContainer.java:384) [graylog.jar:?]
at org.glassfish.grizzly.http.server.HttpHandler$1.run(HttpHandler.java:224) [graylog.jar:?]
at com.codahale.metrics.InstrumentedExecutorService$InstrumentedRunnable.run(InstrumentedExecutorService.java:176) [graylog.jar:?]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [?:1.8.0_121]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [?:1.8.0_121]
at java.lang.Thread.run(Thread.java:745) [?:1.8.0_121]
2017-04-06T11:04:19.227-03:00 INFO [SessionsResource] Invalid username or password for user “admin”

Any help will be appreciate!

Thanks in advance!!

Duplicate of Invalid credentials after a new install