Poor scheduling issues
Seems like there are some teething issues and certainly not the plug and play device/app I needed before going on holiday!!
Let’s hope this gets fixed asap!

Control your TMC AccuDose device via Bluetooth. This application allows for seamless management and operation of the connected hardware.
1.4
November 14, 2021
Refine the parameters for calibrating the device. (20111114)
Reef AccuDose is compatible with iPhone, iPad, and iPod devices. It connects to the TMC AccuDose hardware via Bluetooth.
The app was last updated on November 14, 2021, with version 1.4. Further update frequency is not specified but the current version is stable.
Reef AccuDose has an age rating of 4+, making it suitable for a wide range of users. It is developed by HM ELECTRONICS CO., LTD.
As Reef AccuDose controls a device via Bluetooth, an active Bluetooth connection to the TMC AccuDose device is required for operation. An internet connection is not explicitly needed for the app itself.
No, Reef AccuDose does not contain advertisements. It is a free application with no in-app purchases or ads.
Reef AccuDose's primary function is to control and manage the TMC AccuDose device through a Bluetooth connection, allowing users to operate the hardware remotely.
Based on the provided data, Reef AccuDose is only available for iOS devices, including iPhone, iPad, and iPod.