Follow the instructions below and it should work. If you previously installed the Edge app first delete it and then follow instructions. Always first log in after opening the app for the first time.
Check in the Microsoft Rewards dashboard that If you install the Microsoft edge app on your phone you get 500 points for doing 10 searches and once you open the Microsoft edge app it says it will give you double mobile searches for 30 days if you do 10 searches.
Use this link
1. Enter mobile phone number to receive text with link.
2. Follow provided link to install Edge. After installing app, open app and first page should have a blue bar asking to sign into account.
3. Visit https://m.bing.com
in the Microsoft Edge app and sign in to Bing (Microsoft Acct.), complete 10 Bing searches and receive 500 points.
4. 200 points now available via mobile searches for 30 days.