Probelms saving data with grist desktop

Hi,

I am trying grist because it seems perfect for what I am wanting to do, which is storing some records relating to people who I see. I was trying to use grist desktop because I need this data stored securely.

I am having a problem where I have saved the data on an encrypted folder that is synced with a computer at home. However I have had a lot of problems saving and then opening the data. I have had an error message suggesting that the database was incorrect or corrupted, I have had the data not being saved and today I opened the grist database at work that I saved at home and its completely blank.

Am I taking the wrong approach?
Is there another way of using grist with an online account but saving the data locally?

Thanks