can not continue to write code without selecting a suggestion

[smjt2000]

Hi
English is not my native language.

In Vim, when I'm writing a peace of code and YCM suggests me variables, I have to press Tab otherwise I can't continue to write code!

for example in Django I wrote this:

user = request.user

and YCM suggests me this

UserResponse       [ID]
user_response       [ID]
USER_RESPONSE   [ID]
user                         [ID]
User                         [ID]
UserIn                     [ID]
UserWarning         [ID]
...

now if I want to go to a new line, pressing Enter is not working, I have to use Tab to cycle suggestions and select user. or I have to press Escape to exit insert-mode, press O to insert new line and then I can continue.

here is the video.

if you can see, when the cursor is not blinking, I'm pressing Enter and nothing happened.