7.1 Trial Site - BUGGY - I keep losing hours of work

This is infuriating. I've lost hours of work multiple times. The save button is not reliable. It doesn't appear sometimes and I've seemingly pressed it to no avail. Are other people having this issue? And what is Squarespace doing to solve this? Is it because I'm in trial mode? What's the point of giving Circle Members extra time if the product is just not going to work. 

TEMPORARY SOLUTION

Hit Done - Save Button every 5-10 minutes or after every few changes made.
 

Whenever I have spent a lot of time editing without hitting Done, the save button disappears.

The trial mode does not interfere with Save on purpose.

I've had a few issues over the years but I've never had consistent issues. I've even started an editing session. walked away for hours, come back click on Save and it saved just fine. I don't recommend leaving an editing session for long period of time.

Update your browsers, upgrade your OS, and make sure you have adequate memory installed.

Thank you both for your reply. I will definitely update my browsers, OS, etc. But I did get it to work, by just hitting Done many times until the Save button showed up.