You clearly dont understand the issue and how interaction with workbench works. You can't inject code on top of something which is client side.
The workaround is that you open workbench upgrades, and CraftMenu is there. If there's any other way you would want to access CraftMenu, let me know and I'll add that in, but workbench interaction (pressing E) is not possible.
I won't be refunding you for a plugin you bought almost a year ago just because of a client-side bug caused by a recent update. Every month, there's a chance that Facepunch will make some plugins obsolete through changes they introduce to the game. That doesn't mean creators should be held responsible for those changes and expected to go backwards, refunding hundreds of dollars to customers simply because Facepunch changed something in the game.