Use Google Chrome, Firefox, Safari, etc. browsers
Step 1: Log in to Facebook
Step 2: Page Select (Select your existing page from the right corner of log out bar)
Step 3: Go to the page “Setting” (Top bar of the page right side)
Step 4: Select “Page Roles”
Step 5: Now You can see a Business Manager request below the
Step 6: Select the Approved option for security purposes your Facebook Password will be asked just give it.
The business manager request will not appear on Facebook App. Instead of App use mobile browsers Google Chrome, Firefox, Safari, etc.
Step 1: Open any Browser log in to Facebook
Step 2: Change your URL > delete “m.” from URL
Check the browser after change the URL:
Step 3: Select your page
Step 4: Select page setting
Step 5: Select Page Roles > Check the right side Agency request will appear
Step 6: Select Approved > Password checking
After complete make sure it will appear like this