Datastore Read Operations at 100%: no quota resetted

Hi,

I received an error from yesterday while trying to upload some ODK data.

The error is due to Datastore Write Operations, that are at 100%.

Anyway, for some reason the quota is always above the 100%, because some
application (I hope is the right term) try to do a submission or something
similar. I don't know what happens.

This is what I read into the logs:

··· =====================================
I 00:20:05.482 javax.servlet.ServletContext log: Initializing Spring root WebApplicationContext
I 00:20:05.483 org.springframework.web.context.ContextLoader initWebApplicationContext: Root WebApplicationContext: initialization started
I 00:20:05.485 org.springframework.web.context.support.XmlWebApplicationContext prepareRefresh: Refreshing Root WebApplicationContext: startup date [Tue Apr 21 22:20:05 UTC 2015]; root of context hierarchy
I 00:20:05.487 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions: Loading XML bean definitions from class path resource [odk-settings.xml]
I 00:20:05.510 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions: Loading XML bean definitions from ServletContext resource [/WEB-INF/applicationContext-security.xml]
I 00:20:05.607 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions: Loading XML bean definitions from class path resource [odk-security-settings.xml]
I 00:20:05.680 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions: Loading XML bean definitions from class path resource [odk-common-security-settings.xml]
I 00:20:05.703 org.springframework.security.config.SecurityNamespaceHandler <init>: Couldn't determine package version information.
I 00:20:05.704 org.springframework.security.config.http.FilterInvocationSecurityMetadataSourceParser parseInterceptUrlsForFilterInvocationRequestMap: Creating access control expression attribute 'true' for /_ah/**
I 00:20:05.704 org.springframework.security.config.http.FilterInvocationSecurityMetadataSourceParser parseInterceptUrlsForFilterInvocationRequestMap: Creating access control expression attribute 'hasRole('ROLE_USER') or hasRole('ROLE_SITE_ACCESS_ADMIN')' for /Aggregate.html

=====================================

Currently I'm not able to log into my appspot (https://biodiverpuglia.appspot.com/)

Any suggestion? Thanks in advance.