Heart Rate Tab has disappeared

Hi.
Came to have a look at my max HR over the last few months and found that the Heart Rate Tab on the left of the web browser version has been replaced by one for Pace and I can’t find anything in the Settings to get it to change back. Any help would be appreciated.

There has never been one there. Only Activity HR.
You have to make HR charts on the Fitness page.

Thanks. I’ve obviously had a Senior’s Moment