Several Android device manufacturers offer battery-saving features to their customers. These features impact background process happening on the device, which includes notifications.
This may cause notification delays and notification bursts resulting in multiple notifications coming through at one time when the device exits sleep mode.
This is expected behavior for the battery saving features, however it is possible (depending on the device manufacturer) to add an app to a trusted list which will prevent notification delays and bursts even while battery saving features are enabled.
To prevent notification delays for Teamwork Chat, you will need to add the Teamwork Chat app to the list on your device.
Instructions will differ for individual manufacturers. Please see below for more information:
If your device manufacturer is not listed, please contact them directly for further information and instructions.