Formuler z alpha some apps crash

Sorry,what box is a z10alpha?

Do you mean z10pro or otherwise?

OK,so you have a zalpha,not a z10.

Can you explain what apps dont open(are they from Market or Googleplay?)

Maybe you should consider factory reset.

Do you have YouTube app working?

I have the exact same problem. In fact, even apps that worked before no longer load.
Could this be a security measure?

I am not at all familiar with your box, but apps can be problematic depending on version it is. From my personal experience for example I found that I have to use version 140 of Defsquid as the newer 163 & 171 both act up on some things within the app. It may be painful to deal with but I would force stop & clear the cache out for the app acting up, then if it acts up restarting it then check version & delete it, then grab the APK file for an older version to try. Many times the updated versions have conflicts with older Android operating software. If this doesn't resolve the issue for 2 or 3 apps you try then a factory reset would most likely be worthy to do, then inspect all apps you install for workability independently as you go putting them back in. It could be a problem with the main operating software itself with possibly a corrupted file that is giving you fits, so if working on a few apps won't get them healed using older versions then the factory reset might get you healed up. I always power my Formuler Z11 Pro Max completely off when done using it every day so I know it's been cleared out with a fresh brain when I turn it on the next day to use it. I would monitor all your app versions and keep them from updating if it causes you problems when it updates. To be honest when I bought my Z11 Pro Max I done so because it's the latest & greatest Formuler has out now, & will get the best updates that work. Don't get me wrong here I surely am not putting your unit down, just pointing out the older software can cause troubles with newer updates. I hope this helps.