The psnpatch app is to be launched everytime you boot the console. The choice of buttons to press depends on the features you wish to enable. Pressing X will enable all.
Instead of using the app, I suggest you install the psnpatch plugin (from the app's Cobra menu).
Once installed, the plugin will start automatically in the background & apply your settings. If ever you want to spoof ids, you will need to edit the psnpatch.cfg file in the psnpatch installation directory & add the ids at the appropriate placeholders.
Whenever you wish to connect to PSN, you just need to trigger the psnpatch plugin with a specific gamepad combo ie L3+R3+R2.
You can get all the detailed info & tips you need in the psnpatch release thread OP and on
https://store.brewology.com/ahomebrew.php?brewid=244.