Cannot sync calendar: getting error code

https://www.statenislandnycliving.com/
All-in-One Event Calendar:

On Timely Plug in:
ACTION REQUIRED! Please, sign into Timely Network to continue syncing your imported events.

Sign in error code:
All-in-One Event Calendar:
We were unable to Sign you In for Time.ly Network.
Detail: Signin Failed. Please verify your account information and try again.

I am able to sign on to my account on timely.com

Please help!!

https://www.ads-software.com/plugins/all-in-one-event-calendar/