Error Resolve in Android App

We have an app & there are few issues coming to it while uploading it to playstore ... Read below issues or may be few more are there, you need to resolve them all. 1. Hostname verifier. 2. Security Vulnerability Issues. Check for other issues & send us back the working codes. 5 star guaranteed & we want you to get this done by tomorrow 1pm MAX... BID only when you can do it on time...