From September 2018 QuickBooks Online is deprecating the use of TLS 1.0. Older versions of Scan2Invoice need to be upgraded the use a newer security protocol.
Older versions of Scan2Invoice might get the following error message when trying to connect to QuickBooks Online:
The request was aborted. Could not create SSL/TLS secure channel.
This problem is resolved in the latest version of Scan2Invoice. To upgrade you need to download and install the latest version from the link below: