Plugin requesting a login, (… never before)

Hello,

Our plugin has begun requesting a login when a donor wishes to support. We have not changed the configuration of this plugin, so unsure how to resolve, but it a critical situation as this is the gateway for our donations.

please see:
https://maryknollsociety.org/mission-work/Click “How To Help” on the first donation …
(https://maryknollsociety.org/mission-work/bangladesh-trade-school-women/)

Our page should look like this: https://maryknollsociety.org/wp-content/uploads/2017/03/Screen-Shot-2017-03-06-at-3.33.56-PM.png

Please advise on what you think may be the problem. You assistance is greatly appreciated.

Adam Mitchell