For a few days my IPS keeps stopping. I've tried 'Force Stop' but no change. I'm unsure whether to disable or clear cache as it says it will delete files. Which files? What do I do, can anyone help?
Clearing cache won't delete your main files, they're essentially junk files. Here's a link on "howtogeek" that gives you more information about cache.
You can also clear system cache from the recovery menu.
I hope this helps!!