Installing SP Page Builder 5 Pro (5.2.6) causes a conflict error with the ApplicationHelper that Yootheme Zoo and Widgetkit use.
I have found that to gain access to the configuration section or to upgrade/install Zoo, you have first to disable your plugin "System - SP Pagebuilder," or you will get the error "Call to undefined method ApplicationHelper::getName()."
For WidgeKit, you are not able to access the application information needed when using Zoo as the source because of the above conflict.
I like what has been done with Pagebuilder 5, and I would like a fix to be applied so I can still use your product.
I have found posts on Yootheme that have identified that the new code in your product is causing problems. A few temporary workarounds have been shared, but ultimately, they do not fix the issue, and taking a site down to disable your product to access theirs can not be the final answer. I'm unsure if you can work together and come up with a solution or update your new code implementation to avoid conflict with others.