I have reloaded the files Custom vending set up and monument finder the admin has the correct permission however ui does not pup up.

Please provide as much detail as possible. Which vending machines? Which monuments? Are the monuments custom? Is it a custom map? Are the vending machines created manually, via a plugin, or part of the map? Have the vending machines ever been moved? How much space is there between the lower bounds of the monument and the vending machine?

It is a custom map but the vending machines are default vending that spawn with outpost and banditcamp.

Can you confirm that Monument Finder can see the monuments by running mf show, and mf list?

Which map is this?

Is every vending machine at those monuments affected? If you only tasted specific ones, which ones did you test?

Were there any errors in the server logs when either plugin loaded?

In which order did you reload the plugins? For best results, reload Monument Finder first, then Custom Vending Setup. However, please don't reload them without observing and capturing details of other tests very carefully. I want to understand the root cause of this issue so that I can prevent it from happening again. If you simply reload the plugins and end up mitigating the issue, that won't help me or other users.

Do you have any other plugins that deal with vending machines? For example, vending machine UI plugins, ATM plugins, Talking Npc Vendors, any plugin with Vending in the name?

Map is a custom map from lone website.

Map is oregon2 

Every vending machine is affected in outpost and badit

I think I found the problem Monument finder is not listing any monuments at all. I am not using any other vending plugins.

I see. One other person reported a similar issue about a month ago, where they were using another of Gruber's maps (Badlands), and Monument Finder was not detecting the monuments on boot for some reason. They said that reloading Monument Finder wasn't working, but when I connected to the server and reloaded it, Custom Vending Setup started working.

Oddly, I was unable to reproduce the issue with the same map on my test server, and that person stopped using that map due to unrelated reasons. At this point. I only have a vague theory that some prefabs are not fully loaded when the Oxide hook named OnServerInitialized is called, despite a thorough code analysis rejecting that possiblity. If you are able to reproduce this issue somewhat consistently, I would love to get access to your server, preferably a test server, for further troubleshooting if possible.

I figured it out Gruber maps has OnServerInitialized map protection that deletes a prefab on the map file when it loads up. It must cause monument finder to delay its start up. Reloading monument finder after the server was completely up allowed me to use Mf list. I assume it works now however I am not home to test it. Once I get home I'll let you know. 

Merged post

Update I got monument finder to list monuments I realoaded it and then reloaded custom vendors and still would not show up the UI