API version 2.0 will continue to be supported until the turn of the year 2023/2024.
Originally, version 2.0 was no longer to be available from August 2023.
Development is currently unable to provide support for API version 3.0. In case of problems, we recommend switching to API version 2.0.
Cause:
Currently, there may be error constellations during the changeover to V3. We will inform as soon as these are fixed and a general changeover can take place.