escrow shortage-- Kinda long sorry in advance

Ok ,someone please explain this.. We get a letter saying we had a shortage of $425 our options are to either pay in full now or pay back over a 12month period.. OK i get that but now this is the part i dont get it stats that right now we pay a morgage of 2086 if we pay the full 425 our new morgage as of dec 1st will be 1989 if we pay it back in over 12 months as of dec 1st the morgage will be 2047.. As of now we put 96 dollers into escrow and if we do the 12month repay our new amount going to escrow was $36...
Im confused because if we were putting 90 some odd doller before and came out short how do we only have to put 36 in now?? Wouldnt we be short again and how is that repaying the 400 we owe??

Sorry if this dosnt make sense im lost when it comes to this and this is how i took the letter, Dh is going to call the morgage company today but i figured maybe somone of you could help me understand!!
Thanks so much

Re: escrow shortage-- Kinda long sorry in advance

no one has any experience with this??