UK Non resident - SIPP

I am a non uk resident for tax purposes. I have accidentally opened a SIPP under the belief that you can contribute into it for 5 years after becoming non resident for tax purposes (but have since learnt that that only applies to being able to contribute to a SIPP that's already open); but not open a new one. I opened it more than 30 days ago. I have added 2880 into it and received the basic tax relief of 20% into the account totalling it 3600. How can I rectify this situation.

Hi,
Unfortunately, we are unable to provide specific advice tailored to individual circumstances on this forum.
This forum is for general queries only and is intended to help you self-serve:
Contact HMRC  
Alternatively, you may wish to engage the services of a professional advisor/accountant to assist with your enquiry. 
Thank you.