Can't Restore Whatsapp Chat history

Hello In my Android Phone im using 2 whatsapps.. 1 Normal whatsapp 2nd Whatsapp Business, For some reason i uninstall my whatsapp business but i have saved the complete backup ( Backup, Database, Media ) All, and then i install whatsapp business again, IN THE Same Mobile And Same Mobile Number im going to use... and after verifying my number, whatsapp ask for (restore backup) when i click restore , whatsapp take few seconds and then it says , backup recovered but it shows 0 messages restore.. so when my whatsapp business is activated i don't see any chat history... so the chat history is missing... i did uninstall and install whatsapp business again n again like 5/7 times and i tried different things , uninstall whatsapp business and install again and clear the cache and in Databse folder changing the database file name and trying to use another database file if any case the last database file is corrupted but no any luck....Please Help ! ?