After the update UI doesn't pop up even though I have permission.

same...

Working for me. For which vending machines (which monument, which location in that monument) are you seeing this issue? Did you recently install any new plugins?

To troubleshoot, you can run the Monument Finder commands /mf list, /mf show, and /mf closest to determine whether that plugin has detected the monument and sees the vending machine as being within that monument's bounds.

I'm using outpost integration.
doesn't it work?

Closest monument: Outpost
Distance: 6.77m

The vanilla outpost is called compound. Custom outpost will need to be added to Monument Finder config.

WhiteThunder

The vanilla outpost is called compound. Custom outpost will need to be added to Monument Finder config.

"Outpost": {
      "Position": {
        "Auto determine from monument marker": true,
        "Auto determine from prevent building volume": false
      },
      "Rotation": {
        "Auto determine from monument marker": true,
        "Auto determine from prevent building volume": false
      },
      "Bounds": {
        "Auto determine from monument marker": false,
        "Auto determine from prevent building volume": false,
        "Use custom bounds": true,
        "Custom bounds": {
          "Size": {
            "x": 30.0,
            "y": 30.0,
            "z": 30.0
          },
          "Center adjustment": {
            "x": 0.0,
            "y": 10.0,
            "z": 0.0
          }
        }
      }
    }
  }

I added it, but it's the same.

o.grant group admin customvendingsetup.use

Vanpaul

same...

try /mf closest config 
and size increase x, y, z

and work :D

YaMang

try /mf closest config 
and size increase x, y, z

and work :D