There was a fire that took down a lot of stuff on the web, including some Hive nodes.
To get Leofinance working again for you you need to -
Change the node in Keychain if you are using that. I used rpc.ecency.com. Get there by clicking on Keychain, then the three lines for the menu, then preferences.
In LeoFinance go to settings and change the node to api.deathwing.me
That should get most of the functionality back. Some images are still wacked.
Hope that helps!