The iBO App Service GbR supplies web apps as a service, available only through the Google Apps platform. These terms of service are valid for using these web apps.
Changes to these terms are signaled to each user via email.
The supplier can not guarantee for proper function, because of dependencies that are out of his control. The following reasons might interfere with proper operation :
In case of malfunction, the supplier can request collaboration by the user. Overlapping with Web apps of other suppliers could also result in malfunctions. The time for solving malfunctions is not predictable.
Updates can cause the repetition of an Authorization-Dialog.
There is no support for backup. Backup requires services like Google Google Drive Sync. Loss of data can not be excluded. Your data should be available despite malfunction. But data recovery is only possible through standard features of Google Sites, Google Drive and Google Mail, see File deletion and recovery policy.
Check the data protection provisions of Google and keeping your account secure. Increased security requires archiving, e.g. with Google Apps for Business with Vault.
Additional measures to increase security should include Data Liberation and Google Apps Marketplace (Backup Apps).
Web Apps can be used for free for some time, ie any user gets the proof that they are functioning, unless Google Apps Script and Google Apps service are not available.
Should individual terms of the Terms is invalid or unenforceable or become invalid or unenforceable after the use of the web app has begun, the validity of the remaining provisions remains unaffected.
This next clause applies in the event, that a part of the agreement turns out as being incomplete, ineffective or impractical.
In place of a condition that is invalid or unenforceable, such valid and enforceable provision will be applied, whose effect comes closest to the commonly desired objective.