Bugs?

Hi. I have a few problems to report, if it helps or I'm not doing something correctly.
> After entering the north gate, when i open the game again it doesn't load where i left but on a passed time. (One time my father and my sister even appeared again).
> Also i had a sword that it didn't let me to pin it on the toolbar and when i was manage to put it on the toolbar i couldn't use it. I could only throw it or unequipped it. (Maybe I'm not qualified yet, i don't know)
> Also in the forest i met some monsters which I'm not able to kill. I just shoot them with my slingshot and nothing happens they just seem to get dizzy.
> I have give the quest "learn to cook" multiple times and it doesn't get way. Some of the times I didn't even get the reward.
> And, a friend of mine plays too, I got a quest from father to meet the blacksmith who gave me a key to dungeon but he never got that quest and the father died so how can he have access to the key so he can go into the mine?

I have windows 7 and my friend windows 10.