I need to fix crash issue in Android app.

This is brief overview of app Customer app - login, select category, it will show list of near by service provider, select sp from list. Provide details, place order Services app - service provider will get notification, accept or reject order. If accepted start work, navigate to customer location on Google map, start work Fill extra notes details and cost at end, mark complete. Bill would be generated and send to customer app. Sp can review and rate customer. Now the issue is 1. Admin enters French characters at category creation, services name creation or any other places. When app trying to read app Crashes. 2. App send some data like register time or review time or extra notes add time. Than also app Crashes You need to this. generate signed apk for both customer and service provider app.( I will provide sources code). All data will be fetched in both customer and sp from web services. Localization for French. Yes, make sure admin enter French language characters from admin panel and customer, service provider interaction also in French characters ( keyboard). You need to solve every crash issue.