Next sunday, the Bumperdo server will undergo planned maintenance. I will switch to a newer long-term support version of the operating system it runs on. This will clear the way for me to roll out some much-needed and much-awaited updates to the app. I will try to make the update time as short as possible so as to prevent too much hinder, but I apologize in advance for the inconvenience this causes.
Update 14-10-2018: the switch to a newer setup was successful and all systems are operational again.