Connect client to local UrBackup and internet Infscape Appliance server at same time?

Like described e.g. here Local and Internet backups Simultaneously - Tutorial (kinda) . I wouldn’t advise it though. The best way is to have a local appliance and then to configure that appliance to replicate (certain clients) to the other one over the Internet.

No it’ll start uploading once the cache is full even before the backup is finished. Having a large cache is purely a speed+cost optimization (because downloading+uploading to s3 costs money and is slower).

If you configure the cloud synchonization window to 1-7/0-24 it’ll upload immediately after a backup is completed.

It archives (creates a copy) to cloud storage. This obviously only works if the complete backup storage isn’t already cloud storage…

Yes…

Currently not.

There is a “Report problem” link on the bottom (once you are logged in). If you check “Attach log data”, it’ll automatically upload log+crash data, so using this one is preferred.