First of all, you don't use GenP to download anything from Adobe. Adobe apps are downloaded directly from Adobe's servers, and GenP is only a patcher that modifies your installed files to bypass subscription requirements.
All of your issues are already covered in the GenP Guides and Troubleshoot Section. You should refer to those instructions and follow the recommended steps.
If the CC app is installed and patched correctly as per the GenP Guide, then you only need to patch or repatch individual apps as needed. You can remove the search for the CC app itself in GenP options once it’s properly patched and working, this is explained in the guide.
Once the CC app is patched and shows Install instead of Free Trial or Buy, you’re free to install new apps or update existing ones. After installing or updating, simply use GenP to patch or repatch the individual apps, making sure to unpack (where required) before patching.
When the CC app is patched and functioning correctly, it behaves as if you have a genuine subscription. You can have the CC app open or closed during individual app installs/updates, or patching/repatching with GenP without issues.
Be aware that if the CC app, or any of the individual apps aren't properly patched, or if you haven't followed the guide steps, you may encounter issues like apps closing unexpectedly.
Apart from improper patching with GenP, issues such as Premiere Pro closing shortly after opening can result from a variety of system-related problems.
These may include version incompatibilities between Adobe apps, a corrupted or incomplete installation, damaged preferences or cache files, conflicting or outdated GPU drivers, insufficient system resources (such as RAM or disk space), missing or outdated Visual C++ runtimes and other essential system libraries, conflicts with third-party plugins or extensions, incompatible operating system updates, or restrictions imposed by antivirus or firewall software.
In some cases, corrupted media cache or project files can also prevent the app from launching properly.
Note that we do not provide support or troubleshooting for Adobe system issues; our guidance is focused solely on the GenP patching process. For detailed instructions or help with app- or system-related problems, post on the app’s own Subreddit or search the Adobe Community for similar discussions.
For all GenP-related issues, you can refer to the GenP Wiki. If all steps are followed correctly, your apps should run smoothly. Persistent problems are likely caused by system or installation issues beyond our scope.