What site/games are the hands from? Can you see the marked/tagged hands in the reports?
I just opened a previous live play session from IGN and marked hand for review and the tagged hands checkbox worked as expected.
Please try to create a new database: File - New Database* then manually import some hands via File - Import Folder - from C:\HM2Archive and/or C:\HM3Archive.
*Please do not create your HM3 Database in a sub-folder of any cloud file hosting service (Dropbox, OneDrive,.Google Drive, etc) as it can cause database corruptions because it will constantly be syncing the database to the cloud while you are playing/importing. You can configure HM3 to archive any auto imported hand history files to a cloud file hosting service folder if you choose to as that will not affect the SQLite database in any way, and you can obviously store any HM3 database backup files you create in a cloud folder instead of the default path HM3 suggests when backing up databases.
If you continue to have problems:
Please reproduce the problem and send us a set of log files -
https://support.holdemmanager.com/su...les-to-support
Please zip and email the problem hand histories and tournament summaries to us using the 'Contact Support' link here -
https://support.holdemmanager.com/support/product/1 - for testing. Here is a direct link to your My Tickets page -
https://support.holdemmanager.com/user/mytickets/
Make sure you also include screenshots of your reports/filters and a detailed description by tournament number, session, hole cards, filter, stat, etc. of some of the errors we need to test.
All original hands that are auto-imported get moved to an archive for performance reasons. Your \HM3Archive is in C:\HM3Archive by default, but you may have put it anywhere. The archive should be organized by Site\Year\\Month\DayOfMonth (example: C:\HM3Archive\PokerStars\2016\07\31).
When sending any files please zip them (right-click - send to - compressed folder) before attaching them to an email. If the attachment is larger than 10MB please upload them to a file hosting site like dropbox, then 'copy public link' and paste the download link directly into the support ticket email.