[ memberhship 2 Pro ] Most members became expired

We have paid (but paid manually / off line this year) memberships setup for the calendar year showing a start date of Jan 17 2018 and expiring Jan 17 2019.
All were active but suddenly some of them started to become expired. Is there a way to bulk edit them and make them active again ?
Given the fact that all of the memberships start at the same day and end at the same day.