can't install plugins or updates on OMV 413-1 - no disk monitor available

Hi Everyone

I just changed my configuration (new motherboard AMD Gt48E) to upgrade from 2 to 4 SATA ports and 3 seagate ironwolf HDD (6/6/8Tb).The previous configuration was already working well with the two 6TB disks.
Reinstalled OMV 413-1 with no particular issues
Still, when I log in through the web administration to check the disks and smart tabs, the popup Failed to read file '/tmp/bgstatus6VYv9h' (size=0) error appears and the temperature reading is n/a
Tried to update or to install the disk monitor plugin, but another error message comes in the log (see screen capture)
Except from that, everything works good with network and SMB sharing...
What is wrong?

all my best

Hyperg

Yes I did, but same result...

Thanks for your kind support & suggestion.
Allthough DNS (8.8.8.8,8.8.4.4) were set according to my initial guidelines.
does not change the issue, same error message...

You're right... When set to DHCP OMV plug ins and updates are downloaded and installed...