How to get work mendeley to LO 6.4?

Since I updated my system from Ubuntu 18.04 to 20.04, few months ago, my Mendeley stopped to work. I inquired several but nothing I get. I wondered if there are 6.4 LO and Mendeley users here? How are you managing this issue? Is it problem only on my machine? So far I found some hints that Mendeley did not update to 6.4 version of LO but Microsoft.
Please let’s think about this issue.