New site and the managed backups and snapshots are not running

Hello,

Same issue as before with some of my other sites. I keep getting runtime errors, or Gateway Timeout 'The gateway did not receive a timely response from the upstream server or application.'

On this site it is the above. The snapshot setup is to Dropbox, that hasn't worked, and my managed backup won't even start to run.

Any ideas on what I can do on the sites in my hub to get them all running correctly.

Thank you