Please let me know if you are using Evolve Plus 2.6.8
If not, you can download from your https://theme4press.com/my-account/ and make the update.
Please tell me if your issue is fixed.
If not, I will inform my developer and let my employer know.
According to the changelog ( Can be found beside the download button in https://theme4press.com/my-account/ ) of Evolve Plus 2.6.8, there is no mention of fixing buddypress sidebar.