Android app optimization

Hi, We are looking for a technical specialist to understand and fix the reason(s) of why our app is periodically crushing/stop working. Details: • Devise our app runs on: RKM 902 or any similar miniPC • OS our app runs on: Android 4.2.2 or higher • App purpose: display visual content from social media feeds (Instagram and Twitter) in full screen mode on HDTV • Architecture: php-based server sends links to devise, devise uses these links to download media content using Instagram and Twitter APIs and continuously shows it on HDTV that is connected to the devise • Devise uses wireless connection to connect to internet and download content • Current issues: 1) app freezing (content from social media feed does not change) 2) app minimizing (Android desktop shows instead) • Issue frequency: random (sometimes app crushing/stop working in the first 2 hours of operations sometimes it crushing/stop working after 36 hours) Required result: app working/not crushing for minimum of 48 hours and working/not crushing at all as the best result IMPORTANT: include word UNIVERSAL on subject line of your reply to be considered. This is to ensure that we read only replies of people that read the entire requirement,