The current license is shown in the information dialog. To access it navigate via Help > Info.
You can find these information in the log files as well.
ecu.test_out.log
= 08.01.2024 11:27:53 (UTC +1:00) === ecu.test 2023.4.1.143870+18e79db1bdac 143870+18e79db1bdac (2023/12/12 14:14:10) (64bit) ===
Python 3.10.11 (tags/v3.10.11:7d4cc5a, Apr 5 2023, 00:38:17) [MSC v.1929 64 bit (AMD64)] / wx: 4.2.1+tt.2
License: Dongle #1234567890
- License options:
+ Diagnostics add-on
+ Trace Analysis
Take a look at [Logging] Where can I find log files.