IMO Icon disappear randomly

I have been IMO app for a long time and there weren’t problems. But, I noticed a strange issue. The IMO icon randomly disappears when other icons remain the same. It didn’t stopped it’s odd behavior even I reinstalled it. Any idea about this condition?

I have the same issue. The icon used to be in the last screen every morning, even though I moved it to my first screen every day again.
Now it finally disappeared completely.
I’m using the Pro version on Redmi Note 8 Pro.