I'm replying here since you have no other accounts connected to your MD one, but I have to ask: what's the status on the rest of volume 18?
I want to first state that there is no rush in this, as we all have lives that lead us in different directions, and we also have plenty of other manga that we can be reading. What I'm simply looking for is a reason for the lack of chapters, as you were releasing them at a pace faster than what the current time gap would suggest.
Is it slow going due to a lack of raws? Have you been busy with other things and haven't had the time? Are you simply taking a well-deserved break, or are you actually just done with the series? Whatever the reason, it would be nice to simply know it.