Can you track an IP address of a sarahah message?

It's extremely important that I'm able to find out who sent a message to me on sarahah. And I'd rather not pay or hire someone to do it for me.
Update: Im not saying I want someone to do it for me. I want to know if it's possible and how I'd be able to do it. Either that or I have to go to the police and have them handle the situation.
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