Kicked off absentee roll

Over the summer of 2018, I confirmed my voter registration status and received my absentee ballot within two days of requesting it for the Missouri primary elections. I assumed this meant my voter registration was confirmed for the November election. After seeing several announcements across social media and the news of voters getting kicked off the rolls in Missouri, I decided to check my status in early October and discovered I was no longer registered; despite my participation in the primary only a few months before. I immediately submitted my materials to register again and request my absentee ballot. When I submitted my absentee ballot request for the primary, I received it within the same week. For the November general election, after I realized I wasn't registered, it took three weeks and I received it two days before the deadline for my polling place to receive it. I felt powerless because I had no reason to expect that my registration status had changed and despite my best efforts to rectify it, my vote was effectively taken away from me.