Redmine

Hi!
I just downloaded an Easy Gantt Pro plugin and installed it in my Redmine 5.0.7. The installation went just fine and I can see the plugin in Info and Modules pages. However, I am not able to see a plugin button in my test projects although it is turned on and I can access it directly by its URL. Posting a question to Easy returned an answer that it is a free plugin now and any support should come from Redmine community, so I am asking whether anyone fell into the same problem and was able to fix it.

I am not a very advanced Ruby expert but looking through the code I was not able to easily identify any part that adds a button into the menu. At least something that looked like what I can see in Easy WBS.