Progress from past seasons is not displayed

The diary in the Profile section contains information on achievements in the arena and bg. But there is no information about the places taken in the rating matches.

What information are you expecting that are not correctly displayed ?
The diary only shows your current rating and total number of wins

Information about the ranks I have reached in the past months

I don’t understand why you’d expect that as it’s not meant to be displayed in the diary, that’s not a feature of the game

In the Diary. In the Profile section. On the left are three circles that show the ranks the player has held in previous months. My friend has these ranks displayed in these circles. I have no information there. What’s unclear?

What’s unclear is that nowhere in the game does it say that these circles are the ranks you had on previous months. Where have you read that ?