P.S:-
1) I can not collect pokestop rewards and can not capture pokemon?
:- Wait for 1 or 2 hours then try or change your ID with new one then switch back to your original one, your problem will be fixed.
2) I can not find the developer option?
:- well search it on Google with your phones model about how to enable developer option in Bla Bla phone.
3) Well all other instructions are in the Video as well, get it. and share it with your buddies. and do not forget to comment if it works for you.surely it will work for you just follow the damn instructions