Changing the Hydrom name
To access the menu bar you have to click on the three lines in the upper left corner. (See arrow) Then the menu bar will open.
To change the device name, enter the new name under the "Devicename" lettering. By default, the device name is "Hydrom001".
Changing the device name of the hydrometer
Saving the data is important because it is the only way to connect to the service after waking up from DeepSleep.
Pressing the "save" button saves the settings.
You can check whether the saving was successful by looking at the settings file at http://hydrom001/settings.json/. to check if the save was successful. This file is the permanent memory of the Hydrom.
A second way to check the saving is to reload the page (all browsers offer this). If the properties are then reloaded, the hydrom has accepted them, otherwise the old settings are reloaded.