mailwizz log says "unauthorized" gave up

[jing]

Hi, All,
I am a newbee to mailwizz and I had to take over somebody's past job.
Recently I migrated mailwizz from one droplet on digital ocean to another droplet.
However I can't send any mail compaign anymore since it says "authorized" under delivery log under misc:
Message: Unauthorized.
Sent: Yes
Status: Giveup
See screen shot.
What does it mean?
It says sent but no email was sent. I checked Sparkpost is set up mailwizz correctly.

 

[twisted1919]

@jing - seems you are using a super old version of the app. My advice is to try and remove your delivery servers and add them again. if that does not do it, then try and upgrade mailwizz to latest version and check then.