Electronic filing is only available for Form DP-10. Form DP-10 is not part of your return. Please choose file by mail as your filing method.

New Hampshire uses Form DP-10 for full or part-year residents. The DP-10 only has to be filed if the taxpayer received more than $2400 (single) or $4800 (joint) of interest and/or dividends.

So if you are not required to file this form you can just delete the NH return in the STATE tab. 

What if I live in massachusetts but worked in New Hampshire and made $7000

Report that income on your Massachusetts return.  Also, do a non-resident return for New Hampshire (best to do New Hampshire first).  If New Hampshire shows no issues then you don't have to file it (or pay for it - TurboTax only charges you if you file it).  

It's hard to tell whether anyone is going to tax $7000 - depends on how you earned it.