During initial backup to Carbonite I got the dialog box "There was a problem connecting to the server '10.0.1.2'" Any suggestions..

I am trying to back up my computer to Carbonite. I stopped using them a year ago due to conflicts with Sonoma. so I decided to try again. everything was going long smoothly until I got this box. I assume this relates to Apple.. I noticed that my backup seems to have stopped last night. Thanks for any guidance