While debugging the Branding Extension issue with jQuery i realized there was a new version available (new 4.0.2, installed 4.0.1) but the update was not shown under the installed plugins. Even a click on the check for updates button did not show an update. I had to deactivate the license and reactivate it. Then i had to check for the update again to show the available update.
We had this issue in the past (support ticket 45773) and it was expected to not return. Because this now happened on an other MainWP Dashboard i assume the issue may be caused by two or more Installations using the same extensions because now under API Keys i see:
Please fix this API Key bug asap. It is fatal if the system used to keep wordpress sites updated itself is outdated and you cant see it.