Aeotec Smart Home Hub/2018/2015 Model Hub Firmware Release Notes - 0.52.11

I also can’t access STHM at 2 locations, but both hubs are still on FW 51.2 so it NOT due to a firmware update.

EDIT: But I can still control STHM using @Mariano_Colmenarejo Aplicaciones Virtuales Mc driver. So it appears to be a UI problem.