I am using the WordPress Theme DIVI from Elegantthemes.com and now there seems to be a conflict with their License Key and Mappress.
When updating, I get this warning:
Beim Aktualisieren von MapPress Maps for WordPress ist ein Fehler aufgetreten: Before you can receive product updates, you must first authenticate your Elegant Themes subscription. To do this, you need to enter both your Elegant Themes Username and your Elegant Themes API Key into the Updates Tab in your theme and plugin settings. To locate your API Key, log in to your Elegant Themes account and navigate to the Account > API Key page. Learn more here. If you still get this message, please make sure that your Username and API Key have been entered correctly
Well, the Elegantthemes API Key is not relevant for Mappress, I think.