We have replaced our SharePoint add-in with Microsoft's recommended integration approach which allows access to OneDrive and all SharePoint sites without the need to install anything.
For details, please refer to our support article: Export a document from Simul
To export a document to SharePoint, the Simul Documents app must be installed on the SharePoint site. Once installed, navigate to the "Site Contents" for the site where you want to save the document and select the "Simul Documents" app:
Simul Documents Add-in:
You will be taken to the Simul documents console, select the document tile you wish to export:
Select "Send to SharePoint" from the document actions menu next to the "Open in Word" button:
Simul will then display all previously exported locations and available SharePoint sites:
To create a new copy, select the SharePoint site you wish to export the document to. You will then be able to select a document library and folder if desired:
Press "Export" and a copy will be saved to SharePoint.
If you export to an existing document, Simul will check for any changes to the document since it was last exported. If users have made changes in SharePoint, a new branch will be created in Simul to prevent any data loss. You can then merge these versions and repeat the export process.