Hi,
To check where your process is stuck at, you can open a process report.
Here is guidance in case you are not sure:
Please see the attached rough diagram of how to generate a process report.
It is important that you choose the correct "mode" = TEST and the "process name".
Then click on "Search results" at top right of the screen, and it should display process instances launched in TEST mode.
You can click on the process instance name to open a detailed visual representation of process instance.
It should look exactly like your design screen, and each activity box will have green/orange/red indicator of the status.
Green means it completed, orange means it is pending, red means error.
More details about process report here:
Best regards,
Taka