Just purchased solar 4x cameras system. Can you set up without internet connection?

I have a dongle but doesn’t seem to recognise and therefore can’t sync with cameras. I’m using the system on a building site with dongle only. Not bothered at present about being notified of events. Would just be looking at using the hard drive to look back throuogh if an event happened.
To initially set up and sync cameras, can i take them home and sync them via my home internet and then once synced take to site to put into position and for it to work recording to hard drive?