Icons for the LIDL lights/plugs have been added in Hue Essentials 1.15.1 for Android and 1.9.1 for iOS. The update should be available for everyone now.
The LIDL motion sensor should work when connected using Touchlink. Still need to try this myself and write a tutorial. For now, you could follow the steps for the IKEA smart controls which should be similar: How to connect IKEA TRÅDFRI smart controls to a Philips Hue bridge?. Let us know your experience, please.