Movement doesn’t seems to work

Hi i have a question, i bought a Rolex VSF submariner Starbucks from Geektime like 5 months ago.

I wanted to wear it because i had a big meeting. I work mostly from home so for me i wear the one i love on important occasions.

My problem now is that the movement doesn’t seems to go on his own if i just wear it like it used to the 4-5 times i wore it before. I did turn manually the movement to see if it would start it this way and it did. And it did go by itself but it stops completely after a couple minutes.

Is it a problem with the mechanism ? What should i do ?

Thanks in advance, i’m sorry if my English is not incredible too.