Some of the antivirus programs can cause issues with editing and saving the information in SciNote. In order to avoid this problem, add your SciNote domain https://my.scinote.net (for Free users) or companyname.scinote.net (for Premium users) to the Exception Site List.
In case you are using one of the mentioned antivirus programs below, you can follow the link of instructions on how to add SciNote domain to the Exception Site List:
It is also possible that you do not have permission to edit certain projects, which depends on the role you have within SciNote. You can read more about the roles and permissions here.