How can I delete an expired CA ?

Hello, I'm facing a problem on UTM 9 (las version). I can't delete a CA from the WebAdmin. The button isn't display, the icon of the CA isn't the same as the others. For exemple, ohters CA look...
HA config - After trying to upgrade to the latest version I can no longer reach the web admin page

Sophos UTP PC Config: The PCs (HP SFF 6200 pro i3 (2120) 3.3Ghz) that I have been using for Sophos UTM for years has a total of 6 Ethernet ports. eth0: (Dell/Intel U3867 single port PCIe) is the HA...