What gameplay feature is this bug affecting?
impression

What's the issue? Please include any error messages you receive and as much detail as possible.
the impression of my king has already reached 100% but when I click on the button "improve!" nothing happens, I already waited for several minutes, clicked more than once, reloaded the page and exited and entered my account again, I also looked all over the page and waited 2 days to see if a message arrived and nothing

My version is Chrome 102 on Android 11

Any links relating to this bug? For example, if a particular lion is bugging, what is the link to that lion?
https://www.lioden.com/lion.php?mid=397930

Any screenshots you can provide us with?
I play on my cell phone and I don't know how to link an image

Please provide us with step by step explanation how this bug happened so we can attempt to replicate it. If it's complex, please include screenshots where possible:
I just clicked on the button and continued the game, when I looked my impression was still 100% and I was surprised because I hadn't gained any impression points yet (after I clicked), so I went there again and clicked, I waited 10 minutes and nothing happened, then i clicked several times and then i waited 2 days and still nothing happened