Please reinstall your TOS to the latest TOS to see whether it's ok.
How to reinstall TOS?
Installation package link:
For X86 models:
https://download2.terra-master.com/TOS_ ... 131804.ins
For ARM models:
https://download2.terra-master.com/TOS_ ... 281658.ins
1. Log in to TOS and go to TOS Desktop> Control Panel> General Settings> Update and Restore> Backup and Restore;
control panel.png
2. Tick "Backup system configuration" to back up your system configuration;
backup config.png
3. Go to TOS Desktop> Control Panel> General Settings> Update and Restore> Restore to Factory Default;
restore factory default.png
4. Tick "Restore to factory default", and then click "Apply"; your system will be erased, but the data on the hard drives will not be deleted;
5. Refresh the browser page, and follow guide on the page to install a new TOS;
6. If the page refresh fails, please use TNAS PC to search for your TNAS device; Then select the device and click "Login"; Follow the web page to install the new TOS;
7. After the system installation is complete, log in to TOS and go to TOS desktop> Control Panel> General Settings> Update and Restore> Backup and Restore to restore your backed up system configuration.