I just got it for New Year's and have been using it for a few days now, but I haven't fully understood how to use it yet.
The DUCHIFAT 1 satellite does not have frequency information.
For satellites that do not have frequency information, this can be added manually, such as SO-125. Once the information is added, it will automatically perform Doppler processing.
Some satellites are completely undetectable, such as AO-123.