No. According to my research, support is not yet available. But Pocketbook has promised an update. As far as I know, this is not yet official. The following emerges from a Pocketbook Support forum:

All current models that have a touchscreen will get an update that adds LCP/Onloan DRM support.
Current models with touchscreen: Touch HD 3, Touch Lux 4 and InkPad 3.
https://www.e-reader-forum.de/t...
The Onleihe website also makes this statement (CARE-DRM is currently only supported by Tolino, but Pocketbook is coming).