Orthodonist didn't tell me what is wrong with my teeth and I need an explanation for my case. Please Help! (photo)

i got my braces yesterday and i see that my bite doesn't seem right. My orthodonist did not give me any elastic bands plus i do not know why they put the cement on my molar teeth, they are very annoying and i cannot chew my food. Is this the correct placement for my case? Please explain what is currently wrong with my teeth thank you.