Form 1065 - Filed for an EIN now but formed the LLC in 2014

I formed an LLC back in August 2014. I did not do anything with it. Recently, I decided to try again so I applied for an EIN # with the IRS for this LLC - never got one when I first formed the LLC. Well I got the EIN number but I also got a letter that stated I needed to file Form 1065 for tax year 2015 and 2016 and needed to do this prior to end of next week - May 1!! My LLC has 2 members and has not made any money (actually no activity either up to now). The accountant that handles my personal taxes each year is the first person I called but she is stating that I need to file an amendment, issue K-1s, and write up an LLC agreement?? I could really use some help from a tax expert/financial person/CPA, etc with experience in real estate or LLCs. I am in the Chicago area. Please help - I am worried when the IRS is involved. Thank you. Rose