Thanks for posting, sorry you are having problems.
Please could you email support(at)macrium.com and attach the log files of the failed backups.
1. Click the 'Log' tab the Reflect main window. 2. Open the log by selecting the appropriate date and time. 3. Right click in the log window and select 'View Source'. 4. Select 'File' then 'Save' in the Notepad window that opens. 5. Attach the saved file to your reply.