I'm running a small private server, I'm able to log in as a regular player (not op) and change/add any recipe. The new and disabled recipes work as desired, it's just the IGCM gui is available to anyone.
Thanks

Forge1.11.2 build 2282
igcm 1.1.2
Creative core 1.7.3

Definitely able to use the key, unsure about the command. I'm at work, but I can test this when I get home.

Can they use the command /ConfigManager or do they use the key instead?

The command cannot be used, it says you do not have permission. The V key works at any time.

I also tested as an op and they both work.

Should be fixed now. Thanks for reporting this issue.

Having another problem with the keybind - I'll create a new issue.
Thanks for working on this, by the way. Your mods are definitely appreciated by me!

Sorry, after poking around with it a bit more, it seems to work. Don't know what the issue was, but it crashed a couple times when hitting V while connected to the server.
I tested on single player and it worked, then after that it worked perfect on the server.
Thanks again, love the mod!

Maybe send me the crash-log?

I don't know what the circumstances are, but it does happen every once in awhile if I accidently hit "V" while on the server.
https://pastebin.com/CrnqPjza

Does this fix it?
https://www.dropbox.com/s/8p4l142zg4xnvx7/IGCM%20v1.1.4%20mc1.11.2.zip?dl=1

No, still same issue. I updated both the server and client.
https://pastebin.com/uzcMvGpb

Just confirming that this is fixed. Thanks

Does this fixes it?
https://www.dropbox.com/s/8p4l142zg4xnvx7/IGCM%20v1.1.4%20mc1.11.2.zip?dl=1

Should be fixed (v1.1.4 should be available soon).