@Filip_K I think the maintenance is from database server communication to the BMKG website, also to Windy. Because in the BMKG mobile application it is still visible, and also on this website:

ekowahyu
@ekowahyu
Im Flight Operation Supervisor
Latest posts made by ekowahyu
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RE: Weather Radar is offline for whole of Indonesia
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RE: Satellite Mode not working
@louloa The last data is 8.15 LT (UTC+7), on mine