[Question] settings and apps problem

[SirDickens]

Hello dear chinaphone users!

So I'm testing phone which came just few days ago and I've noticed few bugs which are not sth I can't live with but am trying to figure itbout and solve it anyway.

1. When going to date and time options settings stop working and pushes me onto home screen with error
-is there a fix for this without rooting and gravity box etc?

2. Cannot login to Facebook app or Facebook Messenger app
-anyone had this problem and know how to fix?

3. Sometimes when i turn off phone I cannot start it, it just goes to 1st inew logo and shuts down, and few times like that, if i leave it down for few mins it starts the phone nice and fast like usual, for about 10s

Everything else for now works fine, wifi and gps reception a bit poor, nfc works like baby, battery is a bit too small (so sad for such an amazing phone)

And there are some other things i'd like to mention - I got an amazing 18MP back camera, anyone else got that one? :O plus it says on box i have 5MP front camera and resolution is 8MP which I don't mind as well

P.s at the and of this post I provided pictures of hardware info from antutu. Also it came with cxqv1.0.5 out of box

Edit 1 hmmm so i tried for fourth time reinstalling bot apps to take screenshot of malfunction and now both apps seem to work just fine, weird