What version of app is being used?
What is device and OS versions?
I would suggest to install fresh copy of the app or clear app data to see if that resolves the issue.
eSteem has support for almost all devices, but it might work slow on some due to hardware limitations. Also v1.4.2 had issue on some iOS devices during start-up, but previous version 1.4.3 should work fine.
RE: eSteem - Android v1.4.4, Voters info, Download images, fastcache, improvements